"Hero Mashers" Optimus Prime, Bumblebee and Grimlock took on Megatron in the middle of a busy city. Optimus came to Bumblebee's help while riding atop of Grimlock, swapping heads with his mount to bite Megatron's arm off, getting a hold of the Decepticon's jetpack at the same time. He attached both pieces to himself, and flew around for a bit before returning to the battle. He thoroughly scrambled his pieces with those of his teammates, then took down Megatron with his "dino-fist." Afterwards, the Autobots returned to their normal configurations (though it took them more than one try to do so!) Hero Mashers commercial
When Highbrow was captured by the Decepticon leader Scorponok, Optimus Prime agreed to surrender himself to ensure his fellow Autobot's safety. Naturally, though, Prime did not expect Scorponok to hold up his end of the bargain, and he had Hosehead and Fizzle rescue Highbrow while he allowed himself to be imprisoned. Their mission successful, Hosehead and Fizzle then sprang Prime from his cell, and the team beat a hasty retreat. Autobot Hostage
In the animated series, Optimus Prime was originally in the Autobot Academy and friends with Sentinel Prime and Elita One. When Elita is lost on a planet dominated by giant spider-like aliens, he blames himself for leaving her behind, where she supposedly dies in the explosion of a wrecked Decepticon warship loaded with Energon. Sentinel doesn't forgive him for losing her and Optimus takes full responsibly for Elita's demise. Ultra Magnus, who had high hopes for him, expels him and thus bars him from any position of the Elite Guard. However, Magnus pulls some strings so that Optimus could be captain of a strange Space Bridge repair crew composed of an old grumbler of a war vet named Ratchet, a fledgling Bumblebee, and his fellow cadet, Bulkhead. Optimus is given command of the starship Omega Supreme.
Upon witnessing the incredible power of a lightning storm for the first time, Optimus Prime had Sparkplug Witwicky explain the phenomenon to him. Intrigued by the potential of lightning, Prime put Huffer and Gears to work finding a way to harness its energy, so they could use it to aid in the rebuilding of their spaceship. Huffer constructed a giant lightning rod, and Optimus Prime and the Autobots gathered to watch its first test. They were shocked, however, when a fleet of battered, damaged Decepticons flew out of the mountain housing the antenna and off into the night. The evil robots had attempted to discover the device's secrets and been seriously electrocuted! Once the lightning rod had been checked, Prime vowed to make the lightning-harnessing technology the Autobots' gift to Earth once they had left the planet. Autobots' Lightning Strike
The Autobots continued to guard humanity in secret for many years, until one day in the 21st century when Ratchet was captured by a human group known as Skylogic Systems. Upon investigating the organization, Optimus Prime and Bumblebee came into contact with the Lone Gunmen, three humans who were also on Skylogic's tail for their role in creating a dangerous virus. Learning from them that Ratchet's DNA was part of the concoction, the Autobots joined forces with the humans and helped track down David Simmons, the man responsible for releasing the virus. One interrogation later and they had the address to the Skylogic base, though Prime's size prevented him from easily infiltrating the building, so he left the rescue mission up to Bumblebee and the Gunmen. Once Ratchet was saved, the Autobots parted company with their new human friends in an attempt to lure away any Skylogic pursuers. The X-Files: Conspiracy: The Transformers
The figure's transformation scheme is based on the original G1 figure, the only differences being that the fists are not removed but become the headlights, and instead of flipping backwards inside the chest, Diablock Convoy's noggin flips forwards with the aid of sideways-opening windows, akin to Masterpiece Prime. A "laser rifle" in the shape of his ion cannon can be built from black bricks, and stickers bearing the Autobot faction symbol can be placed on Diablock Convoy's shoulders, although this is not recommended as it is designed to permanently stick to multiple tiles which dislodge easily and may damage the sticker.
Hot Rod appears in All Hail Megatron , while traveling through space by himself, he found himself under attack by the Torment, a Decepticon warship crewed by Bludgeon and the Pretender Monsters. He was shot down, but managed to transmit a distress call to the Autobot starship Trion, which came to his rescue. After the Decepticons were chased off, Hot Rod joined the crew of the Trion. When the Decepticons' galaxy-wide assault hit, the Trion was shot down over Cybertron. Hot Rod sent out a distress signal and was ecstatic when he ran into some other Autobots. Hot Rod was taken back to base and relayed the story of how he and his other crew-mates from the Trion arrived on Cybertron, having been diverted there by Decepticon ships and forced to crash land. Once on the surface, Hot Rod sent out his distress signal and was so sure someone heard it. Kup arrived with the rest of the Trion's crew at that point, just in time to tell Hot Rod of course no one heard his message. After the Autobots narrowly avoided the Insecticon swarm and Sunstreaker sacrificed himself, Hot Rod jumped to Drift's defense when he was being insulted by Bumblebee. When the Autobots were later rescued by Omega Supreme, Hot Rod was glad that he sent out the distress call. He was then ferried to Earth with the other Autobots aboard Omega.

This deluxe-size, highly-poseable version of Armada Optimus Prime is an entirely new mold, retaining the ability to tow Super Base Prime's trailer, though he cannot combine with it. He comes with the Mini-Con Over-Run, who can transform into a gun for him, or can peg onto the Powerlinx plug on Optimus's back to activate a double-fisted "punching" action (that looks more like hyperactive shrugging). Like the Super Base figure, Prime has a flip down chestplate, but lacks a molded-in Matrix, and his smokestacks can be removed (and in many cases will simply fall off), but cannot peg together as a gun. Shipping in a great many waves throughout most of the later run of the line, Super-Con Optimus became a notorious pegwarmer.
One of the single rarest Lucky Draw Figures in existence, this "Custom Color" redeco of Super Optimus Prime was limited to only one in the world. It was the grand prize of a coloring contest held in Septemeber 2005's TV Magazine, in which entrants colored in lineart of Prime with the deco they wanted to see. The winning entry was in green, blue and gold, while ten runners-up received one of five gold or five silver Lucky Draw versions of Prime.
Jazz and Ironhide reported to Optimus that the Decepticons were stealing gas, and Optimus was able to use Roller to find out the Decepticons were using a molecular transfer device. The Autobots assaulted the Decepticon stronghold so they could take care of the device. Summertime Coloring Book After a rain storm, Optimus and most of the other Autobots went out on patrol. When the Decepticons used a fake message to lure Bumblebee out of the Ark so they could take it over, Optimus used the same gambit to retake the ship. A Message From Outer Space
Optimus Prime is the leader of the main group of Autobots in the iteration of the Transformers franchise primarily marked by the 2010 computer animated series Transformers: Prime on The Hub.[16] Optimus Prime was created as the last of the Thirteen Primes, the first generation of Transformers, each created directly by Primus as a band of unique warriors to combat and defeat Unicron. Upon his creation, Optimus united the Thirteen by his greeting All are one. While all of the other members of the Thirteen each possessed unique abilities and artifacts, Optimus wielded no special powers or weapons. It was only through his vision and courage that allowed the Thirteen to finally defeat Unicron. Reborn through the Well of All Sparks, Orion Pax became Optimus Prime, a veteran military commander and second in command who wields an ion blaster and a double bladed energon axe. He became the leader of the Autobots after Sentinel Zeta Prime fell in battle, but is not certain he wants the responsibility.
Yet another Reveal the Shield redeco with the Motorbreath retooling, Convoy is cast in clear red and black plastic. He has been retooled to include a magnet in his right foot, allowing him to interact with Lost Age Battle Command Optimus Prime and Age of Extinction Stomp & Chomp Grimlock. Convoy was available at a variety of 2014 events, including on May 3 at a "Kids Walk" event at Fuji Speedway, in special packaging on May 16 at the "Transformers Celebration 2014" midnight event at the Sunshine City Toys"R"Us store in Ikebukuro, on June 15 at Tokyo Toy Show 2014, at the Aeon Mall in Kasukabe on July 19, and at the "Transformers Expo" event in Yokohama on August 9. Convoy was also available as one of three preorder bonuses for Cloud Roadbuster.
As the figurehead of the entire Transformers franchise, Optimus Prime has been on more pieces of merchandise than can be stated here. Several statues and busts of Optimus Prime as well as Optimus Prime themed objects have been released by various companies since the return of transformers to prominence, such as the "Optimus Prime Oral Care Station". Other figures released include various PVCs as part of Takara's "Super Collection Figure" line, which were later imported as part of Hasbro's "Heroes of Cybertron" series. Larger "Mega Collection Figure" PVCs were articulated and came with energy axe and gun figures.

Part of TakaraTomy's Movie Advanced Series lineup, Revenge Optimus Prime is redeco of the 2010 Transformers Battle Blades mold, featuring darker plastic, a pair of flip-out swords (the first release of this mold) from the Hasbro release, and chromed fuel tank-guns & sun visors. His shins & wheel joints are bronze from the Hasbro release as opposed to the grey of Takara's Autobot Alliance release.
Of course, many voice actors have voiced him in different TV shows and video games over the years, in both English and Japanese. Most notably by a Power Rangers actor and a Batman voice actor. The latter is Will Friedle, who voiced Bee in the most recent series, Robots in Disguise, plus cameos in Rescue Bots, Transformers Prime, and the Predacons Rising TV movie. Friedle is well known as Batman’s voice in Batman Beyond. As for the Power Ranger, that would be Johnny Yong Bosch, who played Adam Park, the original Black Ranger. Bosch was Bumblebee’s voice in the video game Transformers: War for Cybertron.
An all-new Leader class figure of Optimus Prime, featuring a robot design and transformation that is closer to its film counterpart than the 2007 toy version. Features retractable blades on both forearms. New "MechAlive" feature consists of visible moving gears in the chest behind the cab windows. At the push of a button on the back of the cab, the truck mode emits an engine idling sound. The transformation sound is played when the upper torso and lower torso are connected. A recording of Peter Cullen saying, "I am Optimus Prime!" is played when his chest is pushed upward via a lever on his waist.[97]
Hot on the heels of their licensing deals with Pepsi and Nike, TakaraTomy got themselves a slice of Apple™ pie and released Convoy —playing iPod speaker— as part of their small, musically-themed Music Label line. This version of Prime is an all-white redeco of the original Generation 1 cab robot, which (much like the "Marine Version" of Prime from the Sports Label line) makes it seem like he ought to be Ultra Magnus. The figure is actually even derived from the retool of the mold created for the original Ultra Magnus figure, as distinguished by the elongated hubcap pegs on the front wheels. Like Pepsi Prime before it, the figure's fists now store in peg holes on the under side of its trailer. The toy lacks any of the original Prime's stickers (even the silver stripe on his chest is now a paint operation) and includes the original thick-barrelled version of Prime's blaster. The toy features a brand new headsculpt based on the 20th Anniversary Prime figure, given additional poseability not previously seen on the figure by being mounted on a ball joint.
Part of the first wave of TakaraTomy Go! toys, Hunter Optimus Prime is a redeco of the Voyager Class Beast Hunters Optimus Prime toy. His red and blue plastics are now cast in metallic shades, his translucent green plastic has been replaced with translucent blue, his yellow highlights are more orange-yellow, his yellow-painted side windows are now blue, and his gray plastic is now cast in two different, darker shades. The Matrix Saber, aside from being blue, uses a bluer shade of gunmetal paint for its hilt and handle.
Prime's homecoming was not all he had hoped for, for Shockwave had taken control of the planet. Prime and the other transformers were forced to go underground, waging a guerrilla war against the Decepticons. Around this time, Cobra would attempt to steal Teletran-3, but their attempt to teleport directly into the chamber would set off a catastrophic malfunction, one that threatened to crack open time itself. Optimus Prime and the Stunticons were amongst those who found themselves sent back in time. Optimus was reformatted into a 1920s semi-truck and was eventually rescued by Roadblock, Beach Head and the Baroness, who helped him capture the Stunticons.
Naturally, Optimus Prime got the biggest of the sets in the first year of Kre-O. The set can be built into a large long-nose tractor-trailer rig with a removable "sleeper" cab that hides a computer station, and a trailer that can carry the set's two motorcycles or open up to carry larger car builds. The robot mode build includes a huge Optimus, based largely on the live-action movie Optimus, though with a head based almost directly on the Classics Voyager Optimus. He is armed with a distressingly plain brick that fires pressure-launched missiles (aka his smokestacks). Most of the leftover parts in robot mode become a "headquarters" which is mostly just a random assemblage of mismatched-color panels and a pair of barricades. Both main builds leave numerous parts unused if you go expressly by the instructions, but hey, it's a building kit, surely you can find someplace to apply most of them.
The Autobots continued to guard humanity in secret for many years, until one day in the 21st century when Ratchet was captured by a human group known as Skylogic Systems. Upon investigating the organization, Optimus Prime and Bumblebee came into contact with the Lone Gunmen, three humans who were also on Skylogic's tail for their role in creating a dangerous virus. Learning from them that Ratchet's DNA was part of the concoction, the Autobots joined forces with the humans and helped track down David Simmons, the man responsible for releasing the virus. One interrogation later and they had the address to the Skylogic base, though Prime's size prevented him from easily infiltrating the building, so he left the rescue mission up to Bumblebee and the Gunmen. Once Ratchet was saved, the Autobots parted company with their new human friends in an attempt to lure away any Skylogic pursuers. The X-Files: Conspiracy: The Transformers
Part of the Legend Commander Collection sold at Transformers Expo, Convoy is a redeco of Robotmasters G1 Convoy. While most of the paint masks are identical to the original mold, other changes includes replacing the transparent parts into clear blue plastic, and the panel-lining on the grill is stripped off. Unlike the first toy, he does not include a pair of swappable 3mm fists, his missile launcher, or his Calamity Defenser weapon.
On another beautiful day, Optimus sat under a tree with Bumblebee and Hound, discussing the Decepticons. A while later, Beachcomber reported that Grapple had shot at him. Optimus smelled a Decepticon plot and led an assault on their headquarters, only to find that Grapple had been injected with a cerebro-shell, placing him in Decepticon control. Battle commenced, during which Grapple was freed and helped them defeat the Decepticon. Afterward Optimus said it all had been worth it to get Grapple back. Insecticon Attack!
That’s actually a very big part, but I’d go lower than the $10 sets. The little tiny box sets with one minifig and some small vehicle or accessory that were $1-4 when I was growing up in the 80s now seem to be anywhere from $5 to $12 on the shelves. The cheapest of those are the sets that you could buy as a casual gift with pocket change in the 80s. Related to that, I’d like to see a metric that tracked the bottom price (both sticker price and adjusted price) of sets each year.

I don't have a really good pic and I probably have something more rare in a box somewhere that I can't remember but this is my fav 'rare' Transformer: https://s3.amazonaws.com/tf.images/reduced-image_4474_106.jpg Sorry I don't have a real pic, I am packing up to move but here is a stock pic of TF Prime FE Japanese Convention Exclusive Optimus Prime.
Optimus appears again in the 2011 film Transformers: Dark of the Moon. Optimus receives his own armory consisting of weapons and flight tech that transforms into a trailer for him to carry in vehicular form. After assisting NEST operatives in fighting Shockwave at Chernobyl, Optimus learns that the humans have concealed the discovery of an ancient Cybertronian ship on the moon. He revives his old mentor, Sentinel Prime, with the Matrix of Leadership. However, Sentinel Prime later betrays the Autobots, murders Ironhide, wipes out most of NEST, and brings an army of Decepticons to Earth with Space Bridge Pillars. During the battle of Chicago, Optimus kills Shockwave, the Driller, and many Decepticon Protoforms. Finally, Optimus challenges the traitorous Sentinel Prime and they engage in a fierce duel. At first, Optimus appears to have the upper hand, but Sentinel eventually overpowers him and severs his right arm. However, before Sentinel can deliver the killing blow, Megatron attacks and severely injures him, having realized that he will never be able to remain leader of the Decepticons as long as Sentinel is at large. Megatron attempts to make a false truce with Optimus, but Optimus doesn't fall for it and attacks Megatron, decapitating him with his battle-axe. Optimus then bitterly executes the wounded Sentinel with Megatron's shotgun. With the Decepticons defeated and the war finally over, Optimus and the Autobots accept Earth as their new home.
Offered as part of a Lucky Draw campaign in August 2004, this extremely rare version of Masterpiece Convoy is almost entirely vacuum-metalized gold, lacking any other painted detail or stickers. The parts which are not viable are molded in a flat golden plastic; the only exceptions are its rubber tires, the core of the Matrix and the energon-axe, which remain black, blue and orange, respectively. Whether or not the figure was intended to evoke Optimus Prime's entirely-golden appearance in the cartoon episode "The Golden Lagoon", when he was coated with electrum, is unknown; given that entirely chroming a figure gold is a fairly standard deco for Lucky Draw figures, it may just be happy coincidence more than anything else.
A redeco of the original Generation 1 Optimus Prime cab robot sporting an egregious number of Pepsi-themed paint masks and details, Pepsi Prime's differences from Pepsi Convoy are minimal: he features the shortened smokestacks previously seen on the Commemorative Series release of the mold, the blue pattern on his decals are different (matching the American Pepsi can/bottle look at the time rather than the one used in Japan), and also has a different layout for the Pepsi logo on his right shoulder. Like Pepsi Convoy, he comes with an entirely new trailer unit, specially designed to carry either a single 500ml (16.9 oz) size soft drink bottle, three 350ml cans, or 12 bottle caps (bottle cap figurines being a common and popular collectible item in Japan). In a first for the Prime mold, the figure's fists store in holes on the underside of the trailer while he is in vehicle mode. His ion blaster (which also stores under the trailer) is the first Hasbro reissue to feature the original, thick-barrel sculpt, which was reinstated to the mold by the Transformers Collection release of Prime a few years prior.
Alerted by Bumblebee of Megatron's latest plan, Optimus Prime led the mission on Wheeljack's ship to foil them. He sent Bumblebee on an underwater scouting mission, and took part in a pitched battle that ended in the Decepticon's being defeated. Search for Treasure Under the Sea When Rumble dropped rocks on the Autobots, Optimus used Roller to eliminate most of them. Unfortunately he was forced to surrender when he saw the other Autobots had been captured by the Decepticons, and was placed in a special Autobot prison. Luckily Bumblebee remained free, and after he'd rescued the others, Optimus wrapped Megatron up with an iron bar. Bumblebee to the Rescue!
Many who received their first LEGO set in the early 1990’s are now adults looking forward to buying a LEGO set for their first child or for themselves. When we are younger, we do not fully understand how money works. We do not realize that a large LEGO set can require hours of work to earn. We only know what we want. I would wager that it isn’t until our first jobs that we can fully appreciate the value of money. We all wanted the large sets as kids and we didn’t realize how hard our parents had to work for them.

The 2010 Transformers "Reveal the Shield" Legends Class Optimus Prime sculpt in the deco from the first Chronicle EZ Collection wave (see below) was released as a "Dollar Store" exclusive (available at stores such as Dollar General and Big Lots) in generic 2010 Transformers packaging packaging alongside Starscream, Bumblebee and Megatron. The initial release saw the copyright year removed, while a later running change variant featured the new tooling originally used for Generations Legends Class Motorbreath, with not only the retooled hands and a hole on the back of his head/top of his vehicle mode compatible with 3mm posts, but also Motorbreath's sword accessory.
This redeco of Henkei Convoy is cast almost entirely in translucent colored plastic. Also known by the nickname "Crystal Convoy" among fans, it was first released as an exclusive for the Japanese convention Tokyo Toy Fair 2008, limited to 1000 pieces at the event, but was later made available through e-HOBBY. It was sold in a monochrome-blue version of Henkei Convoy's regular packaging.

Outstanding work here. After reading a number of complaints about how the price has ‘increased’ over the years, it’s great to see this analytical approach. One additional hypothesis I have is related to the increase in the number of sets released each year, which would appear to be supported by your data. More sets to buy to be ‘complete’ makes for more money out of pocket.
Prime is loaded with a ridiculous number of features and accessories. The robot itself is highly poseable, and both the smokestacks on Prime's shoulders and the fuel tanks on his legs can be rotated forward to act as guns, even featuring sculpted detail to this effect. As ever, he comes with a trailer that opens up into his crazy-detailed Combat Deck, featuring more action features than ever before. In trailer mode alone, it features a flip-down support stand so it can stand alone, a spring-loaded pop-out ramp instead of a fold-down one, and when the trailer is split for transformation, the traditional support legs underneath automatically swing out into place. The trailer houses most of Prime's accessories, including his ion blaster (with a moveable ammo clip to allow for multiple poses) and energon-axe, as well as his classic gas pump accessory, now with a poseable wire instead of a rubber hose. Two fold-out compartments provide storage space for six of Prime's interchangeable fists, while the other two remain attached the robot: two clenched, two open, a pointing right fist, a tilted left fist (for holding the ion blaster's ammo clip), and two fists with slots to grip the miniscule Matrix of Leadership that fits in a tiny chamber in Prime's chest. The Combat Deck's artillery robot features two flip-out handles that Prime can grip as if aiming the drone's guns, and Roller is also included, with three different 3mm ports to hold Prime's gun and gas pump. Lastly, Prime comes with a rocket pack like those used by the Autobots in such Generation 1 cartoon episodes as "Dinobot Island", and a stand shaped like the Autobot insignia that allows him to be displayed in mid-air, as if in flight. The rocket pack also has 3mm ports for Prime's weapons, and stores on the front of the trailer in vehicle mode.
Q-Transformers Optimus Prime is a tiny super deformed toy based on the Alternity Convoy design, transforming into a Nissan GT-R R35, though his legs retain the traditional blue truck bed motif. The English name on the packaging refers to him as just "Optimus". He comes with a code for unlocking "GTR Optimus Prime" as a playable character in the Q-Transformers: Mystery of Convoy Returns game. Standing at only slightly less than one inch and a half, this is actually the smallest transforming Optimus Prime ever made, which is a fairly impressive feat considering the surprising amount of detail in sculpt and paint apps.

This increase in average piece count could be a factor in why LEGO is perceived to be more expensive now than in the past. LEGO sets have become larger and more complex. They have started to market directly to an older crowd with sets such as the Modular Buildings and the Architecture series. These new sets have rekindled interest in LEGO for an older generation but at the same time, it has introduced this same generation to the relatively high price of LEGO sets.

The problem there is that Star Wars took over the Space theme and Harry Potter took over the Castle theme. Just keeping up with the kids- sign of the times. What’s a castle lover to do? Compare 6075 (Castle) with (7094 Kings Castle Siege) and 4757 (Hogwarts) and they all have their own fantastic attributes. Sell the Harry minifigs and buy some crownies- problem solved.
Generation 2 Optimus Prime comes with all his original accessories, as well as two major new play features. To increase his arsenal, he is armed with a pair of black missile launchers that fit in his fists and fire red spring-loaded missiles; these launchers were retooled from the G.I. Joe figure Barricade. Secondly, he comes with an electronic "sound and lights module" that can either plug into the front of the trailer (where it resembles the air conditioners used on refrigerated trailers), or hook onto Optimus's back in robot mode (via a new slot sculpted into the cab robot). Unfortunately, the soundbox is heavy enough that doing so can easily overpower Prime's hip joints, causing him to topple backward. The soundbox features a large, vacuum metalized Autobot symbol on its front, and three grey buttons which trigger two flashing red LEDs on either side of the module, and a trio of sound effects: a truck engine noise, a laser gun sound effect and a garbled voice that said "I am Optimus Prime!". The module also features ports on either side into which the missile launchers can peg.
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