Heya AussieJane
I've been looking at some US sites as well ,as I need new joggers again.
The US dollar is quite good atm
On sale Brooks Ariel (approx $78)
Shipping US$28
US$107 which is approx AUD $117
Not a bad saving considering I paid over $230 for my Brooks Addictions last year!
Surely the US sizing on my shoes would be the same sizes they use there considering they are all made in the same place (i.e China!?)
Worst case scenario..whack em' on Ebay! 
My son is off to New York soon so might be worth me waiting...he could post them to me, then again relying on sons...another problem LMAO
SW-104.3 (April 06)
CW- TBA
GW-65 kgs
~*It's not rocket science...eat less,move more!!*
*If you do what you always do, you'll get what you always got*