I had a pair of these to sell and I don't know what shipping to AUS is but shipped to GB and it wasn't bad. With the price difference I could se making quite a bit selling dorn your way.
Newegg.com - G.SKILL PI Black 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Desktop Memory

I was looking at prices for a 2x1Gb kit of G.skills DDR2 and Google hit a couple of sites down your way wher these things were $ 135 or so. What's up with that? Is the exchange rate that much different?