Posted By:
Frank WakefieldGilbert is out in left field.
If you sold the card on eBay, had a good scan of it, then the buyer bought that card... Unless you had some sort of warranty that the card would grade as not trimmed, or that you'd accept return if it came back trimmed.
If the guy wanted a PSA card, he should have bought one. He got what he bought. I'm surprised you offered a refund because it would not grade.
The current threads about the most overgraded and undergraded cards tickle me. If these guys know so much about the true condition of a card (and I truly believe they do), then they should all forego getting some third party to opine as to the condition of a card. As it now is, they pay for the grading then whine when it isn't right.
I don't know lots about diamonds. I've bought a few. I have some understanding about cut, clarity, color, and carat. I do like to get a jeweler I trust to tell me about a diamond I'm buying, he can "grade" it. I kinda think I know a bit about cards, and it seems a waste of money to pay for grading.
So to answer the question, I'd do whatever would let you sleep at night untroubled, shave without cutting yourself, a resolution that wouldn't have you contemplating it while in the shower. Do you have frequent dealings with the guy, or is it a one time transaction? Would there be more transactions if this one ends well??