As you know, come September 22, the Elite is dropping to $449. And up until October 20, Microsoft are throwing in a free copy of Halo 3: ODST.
But Big W are going one better. From September 24, you not only get Halo 3: ODST, but Call of Duty: World At War as well.
AND... you only pay $398.
So they're basically paying you $50 to take World At War off their hands. Cheers, Big W!
Xbox 360 Elite 120gig - $398 - At Big W - Starts 24th September [OzBargain, thanks Darius!]