I thought I would ease back into things with a couple of variant covers. Prime had a couple, although all versions seem to be available in equal numbers. The first was No. 4, and had one version featuring a victorious Prime, the other Prototype. There were also polybagged versions of these with a card but no other tangible differences.
The other variant was No. 13, for no apparent reason.
All of these are readily available and cheap in eBay and quarter bins everywhere.
Edit: Moved some info from Tom Mason up into the main post.
Regarding Prime #13 – my memory of that issue was that Norm’s contract was up after issue #12 and he didn’t want to renew. With a different artist coming aboard with #13, Malibu didn’t want it to be a jumping off point for readers. Hence, an easy cover variant to spice things up on the rack.