In my experience, the buyer might not have it any better. I filed a claim for a non-working computer part and listed the relevant details, then got a reply saying that they needed the details

within 72 hours. As I was responding to that note (about twelve hours after they sent it), I got a second PayPal note saying my claim was closed because I hadn't replied within 72 hours. Yes, you read that right. I demanded that they reopen the claim and give it due attention, and they responded that I didn't satisfactorily prove that the item was different from how it was advertised. Had they bothered to read the auction page, they would have seen the words "in working order" - especially since I pointed it out in my original message.