I think they stand by their products or so I was told when I question them about LCD TV's- you can bring them back at any point I was told..
Unfortunately no longer the case. They offer a 1 year warranty after the manufacturer's 1 year warranty. We bought a 70 inch Sharp that just had the panel go out. It was two years old in February, went bad in August and we were out of luck. Our new tv isn't a Sharp and it didn't come from Costco. i would expect a tv to last more than 2.5 years, but it didn't.