Here's what happened to me about 2 years ago:
A buyer out of a small town in B.C. purchased 1 Gem Unc 1937 $2.00 C/T from me,desired it sent ExpressPost.Address was a PO Box so I assumed I'd save the money on the signature option as surely he'd receive the note,after all the P.O. would receive said package,when purchaser came to claim it,he'd be required to sign receipt of same,and all is well with the world...........well.....not so fast....the buyer claimed he never received the ExpressPost.I put a trace on it, had indeed been delivered to the P.O.,but there was NO proof he had received it.Having never dealt with the buyer in any other transaction,I felt sure I was being scammed.But I sucked it up,sent another note to the buyer in the interests of keeping a good name.(Also taught me good lesson about trying to save a lousy loonie at the time!
) .
Two months later! I receive an e-mail from this fellow telling me the other note had arrived,it had landed in bugtusstle B.C,was re-directed,and he wanted to return one but which one....I told him to keep what he thought was the better of the 2.
Well dam n if 1 week I received back 1 of the notes!
I'm sure he thought I had scammed him,and I thought the same.....
My take in the end.If you're the seller,and you did all the "right" things,refund the total.A good name beats a $100 or 2 any day.
But that's just my opinion.