That seller is legitimate, and personally I don't think KOF2K1 MVS is worth anywhere NEAR $750.00 (the Buy it Now price). However, there were rumors about bootleg KOF2K1 carts being out on the market, I believe that TRIEUMINATOR posted about them previously. Perhaps this is just one of the boots . . . note that the seller doesn't mention what it comes with, such as original box, mini marquee, color sheets, move stickers, setup sheet, etc.