Costco has always had a pretty much unlimited return policy. However, due to the problems with being able to find quality electronics, and the wild price schemes, they now limit returns to 90 days, and, offer an extended warranty program that either fixes or replaces the item. The stock market is more stable then the TV market, and is more honest at this point.
So, if I get a TV I'm not happy with, I'm returning it right now, rather then living with it's failures, problems, failure due to false marketing claims, defective light sensors etc.
I had a toaster blow after a LONG time. It was a very high quality toaster, Krup, IIRC.
I brought it back, and said I thought it was probably long out of warranty. Costco checked,
and they had an agreement with Krup that they would send bad ones back, or trash them, and the customer would get a reduced percentage of the original purchase price. I think I got back 30 dollars on a hundred dollar toaster, but, that was better then nothing, and, the new one I got for 30 dollars is cute, and doesn't blow the fuses all the time like the old one did.