In this video, you can see how to buy Bitcoins in Australia for AUD or USD. Visit https://cex.io/, link your payment card and buy Bitcoins.
We accept any Visa/MasterCard in any currency, so you can use your card in Australian Dollars.
If your card is in AUD, funds will be automatically converted into USD.
Check out this video on how to link a card on CEX.IO: https://www.youtube.com/watch?v=Neqyv4VrCDs
Current payment methods and details https://cex.io/limits-commissions