Full credit to Plee on Whirlpool:
http://forums.whirlpool.net.au/forum-replies.cfm?t=1395736&p…
It's not released until tomorrow, and I have also confirmed it with 2 other EB's.
FYI the trade in value for the Kinect is $65, but you could probably sell it for around $100.
Gears would probably trade for around $40(?), so if you wanted just the 250GB console, you could trade both the Kinect and Gears and have the console for about $290, or if selling privately, you could end up with the console for about $250.
EDIT: Apparently Harvey Norman have this deal for $378:
http://www.harveynorman.com.au/product/1256980101897/xbox--g…
http://forums.whirlpool.net.au/forum-replies.cfm?t=1395736&p…