[@Genkai]
Currency is a really a necessity for monetary exchanges. While pure barter works to an extent... how do you haggle around the purchase of a cow, when all you have to barter with is 30 chickens? The existence of magic can't easily fix that kind if dilemma either.
Although, I'm cool with it, if you want go the barter route anyway for funsies. =o

If you're okay with it. I can manage the money aspect through the fastidious merchant (think merlinus from blazing sword) character I'm making. He can act as master of coin/banker for our party.

I'm intimately familiar with to he currency systems of various table top RPG systems. Moreover, I already have a kingdom management spreadsheet leftover from the last D&D Birthright campaign i was in.
I probably need to modify a few formulas though. 

In short, I can have something usable put together in a couple hours.

Then I can convert IC actions into purchases/sales accordingly.