My advice would be to wait. The book was *just* released in Japan, so it takes time to filter down to the cheaper online stores. In about a week or so, however, it should be showing up on Animebooks.com, Jpqueen.com, Akadot.com, etc. It's also worth investigating Amazon.co.jp, as they won't mark up the price for the book, but I have no idea how much they charge for shipping to Australia.