IT Estate has the 3TB green and red for $135 and $183 respectively.
Good if you can pick up from their store in North Rocks. Not sure how much is shipping to other states.
Link for the WD Red;
http://www.itestate.com.au/pages/product/pdt_product_detail.…
Edit: Seems that they're closed on sundays, so you may have to order online and pick up in store. Deal ends 9pm today (9/12)
red vs green, not to be confused with red vs blue, http://forum.xbmc.org/showthread.php?tid=139229