Originally Posted by
iluv2fly
This happened to me once last year at the Duty Free Shop in SYD airport.
I insisted they cancel the first charge in A$ and bill me in US$, which they finally did but took time to do.
It all depends on the base currency for your credit card. If its US dollars, then you're much better off with a charge in AUSTRALIAN dollars. Your credit itself will do the exchange to US dollars at a better rate than the foreign merchant or foreign bank.