I called everywhere looking for a pcv valve GASKET for my nissan sentra, not the pcv valve itself. It turned out to be a very hard part to find. After about 20 calls I finally called Advance Auto Parts and they said they could order it and it would be there the next day. I went the next day to pick it up and it was exactly what I needed and a lot cheaper than what I found while looking online.
PROS: they can order just about anything
CONS: none
more