The good news today for Aussie webmasters is that the dollar has slipped below $1 USD thus your commissions will be worth more.
The bad news is that if you host in the US your hosting just became a little more expensive
However when you consider that we have fair and equitable access to education, health care, great tax deductions and rebates, easy access to finance and good bank interest rates for savings it's all good news compared to the USA.