The Costco Amex card offers an additional year of warranty (on items
warrantied for one year).
I called them this morning because a P&S camera we have failed on
vacation in England. The zoom stopped working and it would pop up a
message about charging the battery and trying again, but that didn't
help, nor did using the second battery.
I was expecting a hassle of forms, estimates, etc. I guess they decided
that for a relatively low value item there was no point in doing that. A
few hours after the call they credited my account for the price I paid
in November 2013. May have helped that they knew I had the receipt and
the original packaging.
I know other credit cards offer something similar but I wonder if it's
as hassle free as Amex made it.