Unfortunately decent, good value amiga gear is hard to get ahold of in Aus. It took me a year or more to find something I was happy with at a decent price. Thankfully it only took me a few months afterwards to find an accelerator I was happy with (I probably spent a little more than Id have liked, but its easier to justify a purchase when you can use it straight away (vs. buying add-ons without an amiga)).
All you can really do is keep looking at the places youve tried. Perhaps amibay as well. All options require a little luck and persistance, but that just makes a person appreciate what they get ahold of even more

Alternatively you could get a minimig if that suits your needs. Another option for now might be something like Winuae, which is somewhat cheaper. While it's an impressive piece of software these days it's not for me, but might tide you over until you find that bargain youre hunting for.
Welcome aboard, and good hunting
