This reminds me of the copy of Gunstar Super Heroes I bought recently off Amazon. The game was listed as being in "very good" condition, and the description said "we clean and test all our games." Meanwhile, the cartridge had warping (as if someone melted parts of it), a dinged up label, and it was full of some weird sticky goo, as if someone spilled something in it. Seriously, I opened it up with a triwing to clean it, and I still can't get all the goo out (though I got most). The game works though, so I didn't feel like complaining and getting a replacement, and settled for mentioning it in my review, instead.