UnP uses their own currency called UnPer Bucks. If we lived in the olden days, we'd be trading in Salt. An old world currency with many uses, mainly, Preservation by salt Curing.We season everything with Salt . It's in our Blood and is essential to our Survival Meat and Salt taste so good together. It's hard to conceive of a time where Salt was scarce and entire towns were built of the mining of Salt, not Gold.