A goblin tribe struck a deal with my players to team up against a powerful common enemy. In exchange, they split a hoard of treasure between them 50/50.
However, when it came time to decide what to give the goblins, the party re-negotiated. They argued that goblins wouldn't have a use for the treasure, opting to give the tribe more of the currency in exchange for more of the valuables. I decided it was a fair deal since goblins couldn't easily sell a platinum tiara to the nearest jeweler.
In retrospect, I have no idea what a goblin would do with gold or finery. What is a simple, lore-friendly answer to how primitive monsters/NPCs deal with gold and treasure?