Since the economy is so high, well at least on Dies. I have a suggestion. Since some ppl dont have the luxury of buying stuff for USD. They can't buy some rare items coz its more than 42 gold bars.
I think we should have a NPC. And this NPC u could cash in 21 gold bars and receieve a bank cheque (with unique ID). So when u want to buy a rare item of something for 50 gold bars, u can could trade item for bank cheques that add upto 50 gold bars.
And also the bank cheques can be exhanged for coins at the same NPC.
What u think ?