I found a paypal calculator on tinternet....Helpful, as there is a difference between UK and other destinations....
I've had a couple of problems with paypal taking 'gift' payments...Too many in too short a time period and they wanted me to register as a business..I managed to convince them in that case that it was all private sales as I was disposing of my garage contents...I guess they know what we're up to....
The last time I had a problem I got a 'gift' payment but the sender entered a shippinng address....That stopped my paypal account and took some sorting out, so no 'gift' payments for me for a while....Ian