An additional oddity is that unlike every other toy in the Go! toyline, Optimus Exprime came packaged in a box without a window. This is potentially because of the sheer amount of information TakaraTomy wanted to print on the box, or because they were unable to fit him into the box in robot mode with all of his accessories displayed. Whatever the reason, it left him with a smaller box than the other voyagers in the line, a substantially-altered box layout, and a much shorter profile.
From this chart, you can see that there has been no real trend in the price per piece in these particular sets. The weighted average (larger sets weigh heavier than smaller sets) for the price is 13.19 cents per piece. The size of the ships did seem to increase in the last couple years; however, 3 data points does not make a trend (I will visit this idea later). For those of you who had a pirate ship growing up (I was lucky enough to get the Skull’s Eye Schooner), you may not have realized it, but it wasn’t cheap. And, the prices in this chart do not take inflation into account.

Takara's release of Optimus Prime the following year made a few changes, noticeably replacing the gold paint and plastic of the Hasbro toy with bright yellow and much brighter gold. The deco has been tweaked to be a bit closer to the original prototype glimpsed in early catalogs, with yellow added back to cab Prime's feet and the cab grill painted silver, and the Super Mode's waist getting much more paint. This version of the figure was never burdened with the mobility-inhibiting shoulder tabs. Completing the Super Mode combination triggered a new clip of Prime shouting "Convoy, ready for battle!" in Japanese instead of generic mechanical sounds. Late in the run, JUSCO stores offered this toy with blind-packed "Space Galaxy" versions of the individual Destruction Mini-Con Team members, one toy per box.

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

Platinum Optimus is a redeco of the Leader Class Optimus Prime. Optimus' color palette is now darkened with some additional paint details. His "Sword of Judgment" is now a light blue. Optimus features more chrome on his "Vector Shield", chest, and on his head. The set was a shared exclusive, available from BigBadToyStore and Toys"R"Us, and was also sold during a Taiwanese event celebrating the launch of Transformers Rising.
Optimus Prime is usually depicted as being a member of an ancient Transformers race called the Dynasty of Primes, often receiving the title "The Last Prime" in many stories, in which he is depicted as being the last of the Primes. In the Transformers: Covenant of Primus, it was established that Optimus Prime was the last born of the original Thirteen Transformers. It was his unique spark and his inspiring reassurance that "All are One" that allowed the Primes to rally and succeed in their battle against the Chaos Bringer Unicron. When tragedy at last ended the era of the Primes and brought forth the new race of lesser descendant Transformers he alone chose to be reborn in the Well of All Sparks as one of them, that he might know them and their needs more completely. All memory of his past life gone, he took the name "Orion Pax" and sought his way like any other robot on the new world becoming Optimus Prime once more when receiving the Matrix of Leadership when Cybertron faced a new enemy in his former friend, Megatron and his army of followers, the Decepticons. This brings a Great War to their planet of Cybertron. Optimus's origins and personality can vary depending on which "universe" he's seen in. This origin is the most consistent between the various incarnations. Further differences are listed in the respective sections below.
A Japanese exclusive, this is a new line of Transformers toys shaped from Disney characters that were first introduced in 2009. Originally revealed in the November 2008 issue of Figure Oh! Magazine in Japan, it was a collaboration project between Takara Tomy and the Walt Disney Company. The first line of the toy series is the Mickey Mouse Transformer which was modeled after Optimus Prime with the same colors as its Transformer counterpart and can transform into a cartoonish trailer truck like the original version. The toy was released on February 26, 2009 following with the Black and White Version a month later on March 26, 2009. A figure of Donald Duck based on both Bumblebee and Herbie the Love Bug, and a second repaint of the Mickey Mouse trailer in Halloween colors, are also planned for release.
Hero Optimus Prime was the first new-mold Optimus Prime toy created for the Generation 2 line. He transforms into a Kenworth truck of unknown model which defies Optimus convention by being one continuous unit, rather than the traditional cab-and-trailer combo. Decals form the windows of a faux truck face to represent his chest, featuring both his name and what appears to be a life support readout coming alive towards the end. In addition to a small gun, he is armed with a large missile launcher, which can fire a rubber-tipped rocket by means of a bellows which you slam your fist down on to produce a puff of air. The launcher is accessible in both modes, ending up mounted on his right forearm in robot mode; the bellows is attached via a rubber hose and cannot be disconnected, but stores on the figures's back when not in use, as do the rockets. A similar air-launching system with identical missiles was used by the simultaneously-released Hero Megatron, and by Laser Optimus Prime the following year (see below).

A redeco of of the Cyber Commander toy above, this Prime features grey plastic replacing the original blue, some deco differences on the arms, body & legs. He also features a flame tampograph on the sides of his vehicle front. He comes in an altered packaging that replaces the first version's painted prototype stock photos with CG renders depicting the new deco, and also features a new Hasbro product code number, thus making him officially a separate product rather than a drastic running change variant.
He comes with a shield with a fold-out handle, allowing Optimus to hold onto it with either hand in robot mode. It has a simple transformation gimmick for vehicle mode which is activated by pressing a button at the top of the shield, causing the sides to spring outwards. In vehicle mode, the shield can be laid flat across the bed of the truck, attaching via a post on the back onto the truck’s trailer hitch. Alternatively, the bumpers on the shield can be rotated outwards, and the front can be bent down in order to form a new front end and hood for "battle vehicle mode", resembling the Stealth Force vehicle modes seen in Dark of the Moon.
This gold vacuum metallized (save for his black joints, which they were made out of unpaintable plastic) Protoform Optimus Prime figure was featured as a Lucky Draw giveaway (along side similarly gold vac-metal versions of Voyager class Optimus Prime and Protoform Starscream) in the December 2007 issue of TV Magazine. Released in 2008, only 5 pieces were made, making it one of the rarest Lucky Draw figures; the images at right represent the only known photographs of it. 
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