As for the price:

Amazon.com in the U.S. sells the book for US $35 (about AUS $60) and charges between US $5 and US $25 for shipping to Australia depending on how fast it has to get there.

I believe there is no customs tariff on books shipped from the U.S. to Australia, but I'm not 100% sure. However, you may have to pay additional taxes, such as GST. I wouldn't know, though.

Within Australia, the list price of the book is about AUS $117, and the online bookstores I saw that could order it from the U.S. were all selling it for around AUS $112.

If you don't have to pay GST on a shipment from the U.S., you might just consider ordering from Amazon.com, as it will be significantly cheaper.

-- Mark