That is great!
Buying or selling used stuff, it's inevitable that sooner or later a transaction will go weird. How each party works to get things back on track is the best measure of how they handle ordinary transactions.
My worst customer did a Buy-It-Now after business hours on Saturday and paid immediately. Within minutes I sent an email confirming his win. All through the evening he pounded me with anxious emails about why hadn't I acknowledged his $50 purchase. By mid Sunday the emails were turning threatening, long paragraphs about taking me down, saving my reputation. (200 positive, no negative). Everything I wrote to him bounced. I looked him up in Google and phoned his business in Montreal, no answer.
I refunded his money at PayPal less than 24 hours after the auction closed, including a note that would be forwarded to him. A day later he wrote me a longwinded email thanking me for finally proving my honesty.
The feedback he had already received contained clues this would happen but it never occurred to me I would be his target.
