Few years ago. A buyer cheated me on eBay. Basically, they purchased my mac and asked me to ship it to their son's address. They paid money through Paypal & cancelled the transaction after I shipped it. eBay didn't help/pay me because I didn't ship it to buyer's registered address. There is no accountability on eBay end. I lost $1.5K laptop. An expensive learning. Since then, I don't use eBay.
Something similar happened to a friend who sold a camera on eBay.
They took eBay to small claims court and won easily. eBay paid them out (and then banned them but they had already stopped using eBay by then).
I shipped with signature verification to the buyers address. The buyer claimed they didn't receive the item and eBay still sided with them and refunded their money. I will never sell anything on eBay again.