Ok, my scanner is not at my current residence, so I'm making do with some photos. there's the IR Microracers. They're $15, which is a bit much I think, but as you can see, they are spychanger style transformers. Prime is very similar to RiD spychanger Scourge, with the nose splitting to become shoulder pads, the false chest and fuel tanks becoming forearms. Bumblebee appears to be the 2009 version. Barricade's head appears to be silver - a little weird. Here's the text blurb: ZipZaps: The cyber stompers and helmet everyone's already familiar with, but it's interesting (and unsurprising to me) to note that the stompers are $5 more than MSRP and the helmet is $10 (!) more than MSRP.
Optimus Prime is as good as bought. I'm glad I decided to start collecting all the Optimus Primes I could find. I would feel bad for letting something that cool go because it didn't fit with my existing collection.