The only one I know of in Australia is Mind Games: www.mindgamesalbury.com/contact.htm
Last time I checked they have the core set for $80 and the first two chapter packs for $20 each.
But even with the crappy Australian dollar you can get them cheaper from this US website called CCG Armory. I used the shipping calculator and found that to get the first 3 chapter packs from them it is $30.96US (~$45.90AU). Here's the link: www.ccgarmory.com/atiofrachpa.html
They don't have the chapter packs listed in order and they put up links for ones that aren't out yet so look carefully.
If you ever come down to Canberra send me an email and I'll have some games with you.