Just went to Perth CBD JB Hifi in enex100 mall.
4GB w/ Kinect bundles are meant to be $298 at the till, with a $50 cashback from MS.
Instead they are $248 at the till, and no reason that I can see that I still wouldn't be able to claim the cashback. I've submitted it and it went through fine.
Remember to get on with a Lot Code of 1129 or lower if you want to Reset Glitch Hack yours. There were plenty at the shop I went to.
Receipt scan: http://imgur.com/OOskm
Was it marked as $298? Wish I was in perth :(