Alex, I am in the US and don't know any of the australian suppliers. I'm sorry. The church has recently pared it's supplier list to only the approved suppliers - you might do a search on something like DMSO Australia and see if there's anyone in Australia selling it. In the US, it's sold in veterinarian stores - farm and pet stores. I don't know if ebay or amazon will ship, but that's another alternative.
Nice article on it here: (SOTT.net - aren't they in Australia?)
www.sott.net/article/228453-DMSO-The-Real-Miracle-Solution
Pam