Well I wouldn't say it's too hard to get a good range in OZ although I will be buying unavailable in australia stuff from Auto Geek shortly. Must take some pics once I get all the products I'm after. eighteen brands and counting in my collection so far
I believe the 3M is made by Clay Magic. It's a very good product and performs well. In the states its a pretty good deal if bought directly from 3M, approx $21.00 shipped, so if you can get it in Oz for a reasonable price, definitely buy some.