Outside the United States, this set was available in a thinner rectangular box. It contained all the original accessories from the American release, but not the DVD. An English-only version of this packaging format was available in Asia and Australia (initially only available at Myer stores, but later also at Toys"R"Us, Kmart and Target, eventually at drastically reduced prices), while a bilingual English/French packaging variant was available in Canada, still including—though not advertised on the packaging—the (English only) comic book.
It may be that the price of an individual brick has gone down over time, but what does it matter if the size of the bricks has decreased overtime? Sure, the average number of pieces in a set has increased, but how many of those pieces are tiny details? To answer this question, I compiled all the weight data on brickset.com and compared the sets by their price per gram in a similar fashion to how I compared them by price of piece. Below is the chart of my results (prices are in US dollars).
Calibur Optimus Prime is a retool of the Armor Knight Optimus Prime figure, who is a retool of the original Age of Extinction Leader Class figure, with the fifth wheel hitch now forming his handheld shield based on the one used in Dark of the Moon, which results in a backpack-less robot mode. He also comes with an axe based on the one used in the third film.
Prime got his own rap segment. He was seen in his "Combat" toy body, waiting for Megatron as he attacked a human subdivision. Prime converted to robot form, blew up Megatron's weapon at point blank range, and slugged it out with him. Apparently emerging victorious, he was next shown sitting next to an identical truck, which kid mistook for the real thing. The real Prime then transformed and picked up the kid, inspecting the human with his cold, lifeless, flashing red optics. Combat Heroes commercial

Late in 2008, this version of Optimus prime was one of four Classics figures repainted into HasbroToyShop.com exclusives (the other three being the Megatron from this set in G1 colors, Grimlock repainted into Overkill, and Mirage repainted into Dragstrip). Unlike those three, it's debatable just how much repainting went into Optimus, but he comes in a snazzy new box.
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.
Optimus was made available as a mail-away toy in the "Digital Doom on the Highway to Destruction" offer in the US in 1986 to coincide with the Transformers movie in 1986. He cost $21.50 and 5 robot points, and came with a special Movie Edition Certificate and a round sticker that read " Movie . Edition . Transformer" with the Autobot symbol in the middle. (This item is considered rare.)
Early in the war, when he was still known by the name Orion Pax, the Autobot who would one day be known as Optimus Prime was ordered by Zeta Prime to escort the Decepticon Prisoners Wrack'n'Ruin in a prisoner exchange, while accompanied by Nightbeat and Alpha Trion. As the group made their way through the Rust Spot, they encounter Slicers and had to fend them off. Orion Pax and his group eventually made it to their meeting spot with the Decepticon Bludgeon, only to be ambushed by the Decepticons. In the confusion, Alpha Trion was taken prisonner, and Orion Pax set off to rescue the elderly Autobot. He and Nightbeat succeeded in returning Alpha Trion under the protective custody of Zeta Prime, but Orion was himself captured in turn. Strapped to a shuttle aimed to crash into Iacon, Orion's fate seemed uncertain. Orion's Gambit

GT-R Prime was racing against GT-R Saber and GT-R Maximus when they were rudely interrupted by GT-R Megatron, a ruthless racer out to prove his worth by defeating all others. A fight broke out, but Prime interrupted it and convinced Megatron that they all shared the same need for speed, persuading him to settle things with a race instead. Transformers GT: Mission GT-R
The Japanese version of the toy, named "Optimus Prime Revenge Edition", was exclusively available at Tokyo Toy Show 2009, and later also from e-HOBBY. Despite being sold in Hasbro packaging like the mass retail Revenge toys in Japan (plus the addition of Japanese stickers marking it as a Japanese market release and containing Japanese safety warnings and manufacturer information), it slightly differed from the Hasbro version insofar as it lacked the tampographed kanji lettering.
Optimus made his way to the Primal Basilica, where he found Perceptor standing over the Mistress of Flame's battered corpse. Unable to do anything for her, Prime activated the Basilica's defenses as a means of stalling Trypticon. Learning from Perceptor that Rodimus had given up the Matrix, the two entered the chamber of the Chorus of the Primes to have the Matrix returned to him. Desperate Actions However, Optimus revealed the Matrix was not for him, but rather for Perceptor, as he wanted to make sure it would be taken as far away from Trypticon's grasp as possible. He guided Perceptor to a secret exit from the Basilica and sent the scientist on his way. Run for Our Lives Warned by the Chorus to "beware the power of the Primes", Optimus charged back towards the battlefield and began attacking Trypticon, rescuing Victorion. Optimus led the Combiners in battle against Trypticon, but the Titan managed to hit him, sending him hurtling towards some sharp rubble. Thankfully, he was caught at the last moment by Fortress Maximus. In Good Hands
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