This is a fun one. Sold a provincial Philip II for $24, a good price for the coin.
Buyer claims they did not receive it. I said sorry, tracking shows it was delivered.
Buyer says no, I didn't get it. Further he then says that I relisted the same coin again and sends me a link to a DIFFERENT coin.
I said no, that's NOT the same coin, it's clearly different. Buyer accuses me of fraud.
I said tracking shows it's there, if it was in your mailbox and now is not, then contact postal authorities to report a theft.
Radio silence for a few days and then buyer appeals to eBay, who naturally sides with them.
Buyer gets a free coin.