Unfortunatley no. Even a search on Google within Oz bought nothing up except for Mil Sims in Melbourne. The guys there are quite helpful - you can order via the net if you have a credit card (I have done this many times, so I trust them), or give them a ring and discuss a way of getting them. I'm pretty sure they accept cheques and money orders, and they are prompt in sending orders out (if they have it in stock).
OK, thanks for the info. My local store in Sydney have now indicated that they'll look into whether they can order them in themselves now though, so I'll wait to see whether they can sort it out.