I don't bother with that hassle at some stores, one in particular. They pissed me off soooo bad one time that now I go buy whatever it is that I figure shoulda held up, wait three weeks and take the one that crapped out back for a refund. Like a Moen "Guaranteed for Life" kitchen faucet that popped an o-ring after about 1.5 years. The guy argued with me that I should have repaired it until I reminded him that goods returned in reasonable condition within thirty days must be taken back under provincial law. I don't buy much at that store any more.

BTW... that minds me of guy I knew that took back a car after it was in the dealer's shop for work for the third time in two weeks. They refused and the manager would not speak to him. He parked it against their front door, locked it up and waited... with his lawyer brother and a local freelance photographer. Took about an hour but he got his money back.