Welcome dude, new Amiga hardware from Amiga Inc will be available in any major retailer - next to the Unicorn stables and behind the FTL drive repair section.
Retro is the only viable path - there are two 'dealers' that are semi-active in Australia:
http://www.amigainnovations.comhttp://www.anythingamiga.com/By "semi-active" I mean their websites are updated once every 23 years, and they may respond to an email in a week or so.
Your best bet is to buy stuff off Ebay or new via a solid dealer like
www.amigakit.comBe prepared for some steep prices on Ebay though - do a search on keyword "amiga" and see what I mean...
