I have a story about one of my co-workers who's a big fan of anthropology for years anthro return policy was one of the best in the game you could literally bring back clothes without a tag and they would still give you your money back as long as you had proof of purchase she point blank asked the cashier why do you let people do this they did research and found that people spend more money if they know they can return things far in the future she also said that when people return an item they almost always turn back around and spend that original amount plus some they're in the store