You guys seriously aren't able to use Apple Pay here? Am I missing something?
Apple Pay only works with credit/debit cards issued by a US Bank that has implemented the EMV tokenization standard. Australian (and Canadian, and European) banks haven't yet implemented this standard, so Apple Pay doesn't work for cards issued by those banks.
You apparently have a US bank-issued credit card. iPhone 6 users all over the world have reported that Apple Pay works, as long as they load a US bank-issued card (that supports Apple Pay).