Here is a site for hand operated mills in Australia:
http://www.skippygrainmills.com.au/hand.htm - they have a few to choose from.
I ended up having one sent from the US. I wanted to make sure it would last, was easy to use etc. We got the Country Living Grain Mill, cost $350 - we got it $50 cheaper by requesting a 'blemished mill' which they sometimes have on offer. You can hardly notice the mark. We also bought extra stones and a repair kit for obvious reasons. Here's their site:
http://countrylivinggrainmills.com/
Cost over $100 to have it sent here though, so not the cheapest option, but am really happy with the grinder. It gives fine flower and easy to turn and is quick.
Hope this helps...
Nyssa.