All orders are processed and charged to your credit card in Australian Dollars (AUD).
The bank that has issued your credit card determines the exact exchange rate that you will be charged, but in general it should match closely with the current rate. To get an estimate of the current rate, check out the link below:
XE.com - Foreign Exchange Rate Calculator
(Please note that we do not make any guarantees or promises about what the current exchange rate is or what you will be charged by your bank, as this is out of our control.)