Seems like a good price for this ever popular phone. Price is $428.95 + $48.95 postage. Comes in both red and blue for this price with the following links,
Red - http://www.shoppingsquare.com.au/p_401845_Samsung_Galaxy_S3_…
Blue - http://www.shoppingsquare.com.au/p_400892_Samsung_Galaxy_S3_…
It's $468 delivered from Kogan.