Hey, you should take a photo of the seial numbers and any identifiable marks on the item.
I have it happen to me all the time, sold a raceface diabolus crank and the guy said it was the wrong size. I said no problem send it back, it went out with a like new bottom bracket and came back with a bottom bracket that had most of the threads damaged.
I sold an Xmox 360 3 months old the buyer claimed that it was damaged and tried to make a claim, I asked ebay to ask the buyer to provide the serial numbers from the xbox, which they did then provided ebay with the photo of the serial numbers that I had already taken 😀
Infact it happens all the time for lots of different stuff, just be very careful and ask yourself what could go wrong and how do I counter it.
As for feebay, I really hate that site, the service and site is utter crap and it’s just a fleecing ground for bankers these days.
The we at feebay believe people are basically good, doesn’t make sense with the rising crime rate statistics, and don’t even get me started on the feedback system or the adverts that you can’t turn off?
FEEBAY IS RUN BY A BUNCH OF SCUMBAG BANKERS, I HATE THAT SITE AND TO THE VERMIN THAT HAVE RUINED IT, I HOPE YOU ROT IN HELL!!!!!