ebay problem

If 65 is the $ amount, paypal will not side with the buyer with a regular delivery confirmation. The issue you may have is if the buyer paid with a credit card. They can do a chargeback. You sent it per Paypals shipping requirements and they should stand behind the policy. Since paypal wants to dink people for a % of each transaction, this is part of the cost of doing business for them.

I had a FedEx ground driver drop something on my porch the other day that wasn't mine. Right street, wrong house number. I caught him before he left and he took it to the correct house. Address on the box was not my house, but the computer in the truck told him to deliver it to my home... go figure.

Build the cost of signature confirmation into your shipping cost and this type of thing will likely not happen.

Good luck with it.