The return policy is 30 days and it has to be like new. I haven't done anything with this, so as long as those conditions are fulfilled, it should be fine. I'm most worried about where you put the screws in, but that's nothing a little black paint wouldn't solve. Also have to make sure the box has no rips, and I'm a bit rough with things.. Have to check when I get home.
Generally my experience with them has been effortless when I was returning fans back and forth like crazy.