Thats a really hard question to answer. Your best bet in Australia is to find mountain bike wheels and use them, preferably a single speed setup if you are lucky enough to find some. Secondhand mountain bike wheels on EBay are cheap and readily available, I am unaware of any decent wheel sets available in OZ at a decent price on
In saying that buying a mountain bike wheel set (disc brake) will open up another decision for you as far as attaching a sprocket and deciding on a rear brake.
Unfortunately we don't have strong vintage rims available here to use, nor do we have Worksman rims available and our cheap store bought bikes have cheap crappy wheels on them..... Not like in the US where 12 gauge spoke wheel sets can be found on cheapo bikes.
Hope this helps, if not try being a little more specific of your needs.