Just my $.02, but with the few unhappy buyers I've come across, I send a prepaid return tag and pay both sides of the shipping. It's a small price to pay for the goodwill, and keeps your karma clean. Make them happy and move on.
Though one can ascribe all sorts of chicanery to either party in a deal gone bad, it's been my experience that most buyers and sellers are pretty honest and straightforward. Disputes that I've been involved in have been more a matter of misunderstanding and lack of disclosure (my perception of "mint condition" may differ from yours) than outright dishonesty or fraud.
Your mileage may vary. Best of luck sorting this out!
Though one can ascribe all sorts of chicanery to either party in a deal gone bad, it's been my experience that most buyers and sellers are pretty honest and straightforward. Disputes that I've been involved in have been more a matter of misunderstanding and lack of disclosure (my perception of "mint condition" may differ from yours) than outright dishonesty or fraud.
Your mileage may vary. Best of luck sorting this out!