Cracking post this about book buying and selling in Australia from a book buyers perspective:

The Australian Booksellers Association has been pushing on behalf of retailers for the government to introduce GST on imported goods under $1000, which would effectively raise the price of books on Book Depository by 10%. On 18th December a Productivity Commission inquiry was announced to examine the concern of retailers, so expect a war of words between retailers and consumer groups in the next 6 months. It is worth pointing out that in the case of my 118 books, adding 10% to their purchase price would result in a spend of $1636.38, still $1102.50 less than had I purchased them at Borders, and $714.33 less than Readings.

via Fly the Falcon: Book Depository vs Book Stores.