[Fred]

Just a guess -

I'm guessing the card is worth a couple grand.

Seller was very edgy shipping the card to begin with. Seller was probably afraid the card would get lost in the shuffle (heck, I don't trust the postal service at all these days - I stopped having all my financial documents sent through USPS). Seller requested ship back to them in an effort to not lose the card.

Kind of crappy all around. It wasted your time and effort. I bet if you were available to receive the package, all would have ended well. As for the seller, perhaps they can't afford to be out a couple grand and just got really paranoid and got impatient, very quickly.

Sorry to hear it happened.