Pawn shop? Or maybe at a supervillain's lair, where sellers are known to accept briefcases full of gold. Usually you need to convert your gold to a legal tende

Pawn shop? Or maybe at a supervillain's lair, where sellers are known to accept briefcases full of gold. Usually you need to convert your gold to a legal tender currency in order to be able to spend it. You normally lose money on the conversion at a retail volume, though.