Last pawn shop I went to wanted the current day's spot price plus $7 plus 3% for card transactions. So any one oz piece they have right now today, if you're using a card, would cost you $103 to take home. I won't be bothering to look there again.
If they paid the same (meager) percentage of spot for the keys as they do for common dates, they can sell them to me at the same price they charge for common dates, or they can pound sand. I don't like to feel like I'm taking advantage of uninformed individuals selling coins, but in a pawn shop, the individuals I'd be looking out for have already been cut out of the deal. It's not like I can find the original owners of the pieces and make them whole.