Bought mine with a money transfer. Often used in Norway for high amount deals.
In that case the seller is the one that can be fooled if I cancel the transfer short after I get the item.
So to make things right and too show I'm a honest person I suggested we made a simple contract with the pins ID number, date of purchase and amount agreed for the pin. "Working machine, sold as is with minor cabinet flaws"... or whatever you and the seller agrees should be in a contract.
I think I would sell and buy pins with a small contract like that, just as if I was selling or buying a car.
Recomend that...