IMO the buyer got what he paid for. I don't think the seller should have to refund the purchase price plus shipping just because of buyer's remorse. The interior crumpling looks bad but it's obviously something that happens at the manufacturing level based on the evidence presented. The seller didn't do it so your beef isn't with the seller. If you don't like them then list them for sale and get most of your money back out of them.
Concur.
Thanks for the support guys, I agree
However he refused to even test them, and filed a claim with paypal.
This was his message in the paypal claim
"Kyle, nothing personal.....I just think you weren't altogether truthful. (as in post #5 in your sale ad). You either didn't look inside them at all, or you just thought that looked normal. Fyi, I asked my 11yr old daughter, who knows zero about mufflers, and when I showed them to her, she asked me why are those bent?"
I would run from this buyer like the plague, im debating putting him in the bad buyers thread.