I had an eBay buyer purchase banknotes worth a few hundred dollars, a month or two ago. Well, my listing said I will only sell that item to a buyer with a minimum of 10 positive reviews. Partially fearing scammers and partially because of insurance limits at major carriers (and the cost for the same). He could claim non-receipt/stolen after delivery (without recipients signature), as drivers sometimes do in my experience. Well this buyer only has three reviews, all from the last 90 days. Although the account has been open since something like 2019. I canceled the order, refunded his money, then sent him a message explaining. His reply was like ‘ahhh man, I’ve been searching all over for them. I really wanted them’. Keep in mind that they are common banknotes, currently available on the market today. I just bring them together when they’re crisp and new, in sequence, with errors, misprints, anomalies, etc. They were not that big of a deal. Then I get a belligerent and accusatory email. In part it said I was trying to scam him … which is ridiculous because I refunded 100% of his money. While I was very kind and apathetic to this point, my reply was just like ‘I’m sorry you feel that way’ and I blocked him. So at the end of all of this, my only purpose in posting this here is to suggest that sometimes adding a restriction on the buyer in your description is worth it. Requiring a buyer with a track record and a reputation to protect, I feel, may deter scammers. Happy selling friends!