You might check out HCM Audio's Web site. They've been having a clearance sale on AudioQuest power cords, and they can be ordered with different plug options. Don't know if they can fix you up with plugs to fit Australian sockets, but you could probably get the cords with IEC socket and install your own power plug. HCM's Web site is:
www.hcmaudio.com
www.hcmaudio.com