I would strongly advise against buying SD cards or similar on ebay regardless of pricing. It seems like the majority of the fakes people get come from various sellers off of ebay, especially that memory that almost seems to be priced too well. Even that one on Amazon only has three reviews, of those, only two held onto the card, and of those two, neither actually made it a point to check and see if the card was legitimately 128GB or not. I would spend a bit more myself on a well reviewed card, or at least one from a recognizable brand.