I can't even count how many LPs I have bought brand new sealed that have come out of the packaging warped--dozens and dozens--a handful have been unplayable. It was so bad fron one local store that that after returning many and getting more warped vinyl in exchange, I have been hardcore boycotting them for a couple years now. I think they and their distributors were both being idiots about storing them. This store certainly wasn't the only source for bad vinyl--most distros leave vinyl sitting in hot trucks, I'm sure.
Dilemma of Warped LPs - is seller liable?
I have bought a few LPs, mostly on e-bay, which were advertised as Mint or Mint minus and they arrived so severely warped that they couldn't be played, as they hit the suspension of the cartridge. I have not claimed a refund from the sellers, since they were Mint in appearance in one plane:) - question: should the seller refund the purchase amount in these circumstances? I have assumed that the seller did not know and sold the records in good faith. The seller obviously did not play them, I assume, of course. I guess my philosophy is if you buy a used item, you take a chance.