It is recommended to use PayPal Goods and Services when paying for an item. There are no buyer protections when sending PayPal Friends and Family, Zelle, Google Pay, Venmo, CashApp, Crypto, among others.
I included a rack in a sale with some 5s and 25s a number of years ago, when the Trops were just hitting the market. Sold them to someone on CT, but my inbox history has since been deleted, and I don't recall his screen name. I have never seen them come up in a subsequent sale.