IMHO The prices for non manufacture chines parts are pretty much the same price than in the states or Korea. If you really want to buy from taobao you have to use a broker (third party service) or ask some friends in China. If you use a broker make sure the they accept PayPal since you will have some sort of protection.
I personally do not buy expensive boards from taobao, since if something goes wrong you have to pay shipping, deal with chines speaking guys, etc. So at the end I prefer pay a little more and get some kind of support if something goes wrong.
Since you have a Chines friend ask him to buy the board for you and he will inspect it
Which city in Australia?