I second Marc about Dymocks.
When they started selling ebooks I bought 2. They cost more than other stores. They took my money. They sent me emails with links to download my books. I tried. One link told me I couldn't prove I owned the book, the other said my computer was a security danger and I couldn't have the book. I haven't ever been able to logon to get to my bookshelf so I ended up getting the books free from Fictionwise with my micropay rebates.
No way am I going to risk $899 for an Iliad from them.