Supercheap have them @ $52 each. Part Number DR118 Code AT030.
http://www.supercheapauto.com.au/parts_guide/
Roveras Auto parts have them at $46.64
http://www.roveraautoparts.com.au/index.php?manufacturers_id=16&sort=4a&page=6
Sunbury Brake and Clutch do the pair and pads fro $149.
http://www.sunburybrakes.com.au/prod1725.htm
Shaun