I bought one (a paper and ink one) about 2 months ago.
If it was available on Kindle in Australia I would probably have bought it on a Kindle (of course I didn't own one at the time so it is all academic).
BTW I rarely buy books from Australian bookstores - most of mine are bought from the UK (Bookdepository - free postage) (found using
Booko) or I grab them from that big building full of books - aka the library.
Note I use Booko, I don't own or run it (I wish I did

excellent site)