My experience with fake gear on ebay (from buying loads of adidas kicks back in the day) is that if its fake and advertised as legit then you can dispute for a full refund and once you've proved its a fake (should be easy enough), you get your cash back and you can hold on to the item as you need to ensure it is "destroyed".
Might want to double-check to see if things have changed in the last few years but I've "destroyed" three pairs of trainers at no cost to myself (in fairness, I bought all three expecting them to be legitimate).
My experience with fake gear on ebay (from buying loads of adidas kicks back in the day) is that if its fake and advertised as legit then you can dispute for a full refund and once you've proved its a fake (should be easy enough), you get your cash back and you can hold on to the item as you need to ensure it is "destroyed".
Might want to double-check to see if things have changed in the last few years but I've "destroyed" three pairs of trainers at no cost to myself (in fairness, I bought all three expecting them to be legitimate).