I've sold a lot of items on stockx and had no trouble other than their fees that are definitely too high. However, I recently sold a hoodie that was completely new in the bag, but when I received it from supreme it had a small tear on the bag. The ear was probably a 1 inch long cut, so it's nothing. However, apparently this one inch tear counts as the item being "used" so they made me pay the shipping back. Luckily they didn't make me pay the stupidly high fee since I've sold items before.