Don't go for the advertised price on their clearance page. When you click the Buy Now button, the actual price which shows in the shopping cart is $129. May well be a pricing error. Enjoy while it lasts. First post so be nice.
Edit: Optus has corrected their mistake. But that doesn't mean you have to pay $159 now. The have corrected the ad and now it is advertised at $129
Did I mention that I have already placed the order :)