I love Costco return policy and we bought a lot of stuff there just because "well, if we don't like it we can just return it anytime" (and we did like it and never returned it) over the years, but I've seen some ridiculous returns there. From people treating returns as a zero-cost rentals to buying a tree, failing to water it until it's dead and then returning it. They still have very generous policy and I would hate to see it ruined by people who're just taking an unfair advantage of it and ruining it for everybody.