Hi, since you are in Australia, easiest to get it from here I think:
www.csmi.com.au
Should have price on the website.
I got mine in China via a TaoBao Agent ... lots of trouble it was ...
The truck comes as a kit, you still need to buy the motor, ESC, servos etc.
Hope this helps.
If you are interested I have a detailed build thread (German/English) on a German site. Was planning to make one here too, but didn't get around it yet.
Link:
http://www.modelltruck.net/showthrea...8x8-Baubericht