Harry, books are very expensive in Australia. Most soft covered quilting books are Starting at the $50 mark for books which I see listed in the States for $15. A lot of people use the U.K. site that I will list below for you to compare. There are a few others, but this seems to be the most popular amongst my crowd.Hope my info. is helpful to you - after all, we are a much smaller market than the Americas and Europe.
http://www.bookdepository.co.uk/