The unreleased TF3 movie Wreckers 2-pack (Topspin & Leadfoot) is back on ebay, for US$2,600. Judging by that price, I'd have to guess that it is the one that was on ebay a couple years ago, being flipped for a profit knowing that it is a one-of-a-kind.
Topspin looks to be identical to the regular release toy, but Leadfoot has the Target logos on it, which the regular version didn't have on it.