Barter based NPC Traders

[vbawol]

that only sell what has been sold to them and use in-game items as currency,

[joelawm]

I like the idea of physical currency, whether its like the roubles or the gold bar method. My main reason for this is in exile its hard to remember to grab the pop tabs when its just a number. In epoch arma 2 though, as soon as you saw those gold bars you ran for the hills.