T'is a dirty counterfeit. Report seller!
I've seen some TM2 Megs' floating around ebay that are in odd colours. Mostly before ebay started cracking down on KOs. But they didn't look anything like a real TM2 Megs.
I have a list of all G1 characters that have been released in CHUG form. You can find it here. Please feel free to let me know if I got anything wrong so I can fix it.