Our store the “policy” is you have to return it and then either get another one from the floor and purchase that one or if that’s the only one, wait for that to be reshopped. Since people usually do this with clothes and it takes like multiple days for the fitting room to catch up on their reshop I don’t enforce it. I let them return and rebuy right there. I believe that this something that’s not hard to “make it right” and we shouldn’t be so strict over. I would be mad too if i bought something and then shortly after it was clearance and I would hope the store would do the same for me.