We do! If you click on “your account” in the upper-right corner of the screen, you’ll see a spot where you can change your currency to a different symbol (or to nothing, if you prefer the minimalist look).
Some users ask us if PearBudget can handle multiple currencies at the same time. Unfortunately, in order to keep the program simple (and to not have to deal with things like currency conversions and foreign exchange rates), PearBudget only works with one currency at a time. But it can be any currency you like!