Kixify alternatives

My first experience with StockX will be my last. I purchased a game through their site, assuming that it would be far safer than others. The opposite was true. Upon receiving the game, I was incredibly disappointed to see that their own verification sticker had come loose and damaged the box. (Besides placing a sticker on a cardboard surface, which is never a good idea, they pulled it so tightly that it ripped the surface.) I reported this and was told that I could not return the item and that they "issued a free shipping code for a future purchase." I won't be making any future purchase, and I highly recommend that others do not