Ah, cash. Convenient way for me to keep my head from going ‘splody from having to spend a week working out barter equivalencies.
Mostly on the grounds of the list I’m abusing using it, gear and prices will be in pound/shilling/pence format. This is explicitly a convenience issue – there’s no real universal currency in place in the WU; about the best they’ve managed is a few places standardizing coin alloys such that the cash value of a coin is indisputeable.
Barter is by far the form of exchange used outside of comercial and upperclass frames of reference.