In Reply to: How much AUD cash for 3 Visas? posted by Tobe on Saturday, 8. February 2014 at 09:49 Bali Time:
....they will give you the change in rps.
The airport exchange rate is always less that on the street but with such a small amount I would not worry.
You do not say when you are travelling so the AUD may have depreciated further against the USD and thus you would need more AUD's.