Belkin SurgeMaster 350VA Battery Backup - 6 Outlets $79.95 delivered @ OO.com.au
Delivery would be around $27 to Darwin so worth having.
Looking around this seems to be around $40 cheaper than elseware and free delivery too.
Earths AC power through 6 surge-protected sockets, 3 of which provide battery backup
Offers faster communication through RS-232 or USB port, along with expandability and easy installation
Performs perfectly with up to 19" monitors
Manages computer shutdown in the event of a power failure
Provides diagnostic support
Safeguards telecommunications with RJ11 ports for your telephone, fax or modem
500VA / 300W Stand-by UPS with Australian style sockets
Comes with a 12 month supplier warranty