I'd imagine it's value when it comes to mortal currency depends on whether or not the people other than the type who can visit Santa's Workshop can see and interact with it.

[Stacia cocks her head and thinks a moment.]

Yeah, I don't think I've interacted with gold outside of jewelry before, and none of that was ever not some kind of alloy or plating or something. I wouldn't know how to convert it either, outside of a cash-for-gold place and I get the impression those are pretty scammy.