I'd just like to contribute a couple of things. You can download the e-book version of Destiny Quest internationally (and instantly, incidentally). I am in no way trying to advertise, but I use Amazon's Kindle version--although I'm sure the same download is available through the Nook or whatever other e-book reader you might have.
Secondly, while I found that Destiny Quest wasn't available through the U.S. Amazon site, the Book Depository (which is linked through the "buy" tab above) ships internationally. The link is http://www.bookdepository.co.uk/Legion-Shadow-Michael-Ward/9780575118737