(sorry, I always wanted to do that!)
Anyhoo, if you want supplies in Australia for metal, on the East
Coast there is Twin Plaza Metals, P J Williams, John Lazos, (all
Melbourne) and a & e metals in Sydney.
There are also good jewellery tool suppliers who are very helpful
and will direct you to sources, House of Jewellery, Sydney;
Australian Jewellery Supplies, East Coast; and Koodaks of
Melbourne.They all have websites pretty much so you can google them.
They are also on a general site called Yellow Pages or White Pages
telephone directory which will give you more contact
Just persevere, there are very many Jewellery supplies/metal sources
particularly on the East Coast that I know of as it is quite a
centre for design and manufacture; in Melbourne alone there are
three Universities within spitting distance who all teach
silversmithing (RMIT, MONASH and MELBOURNE UNI’S).