Having owned a jewelry store for fifteen years, I would occasionally encounter this situation. Someone would buy something for an occasion (Christmas was the big one) and then bring it back a few days after and want their money back. The problem is, if it is a one of a kind piece and someone else would have loved to own it, I lost out on two counts. So to counter that, I instituted a 25% restocking fee. Solved the problem and I think businesses should consider that for their own stores. Paying $250.00 to “rent” a jewelry piece for three or four days suddenly became a bad idea. And trying to pull a fast one on a small (or large) business owner disappeared; at least this business owner.