Moved to Forum: Original Link
A friend brought this to my attention on Sunday morning, but you can get the last generation Mac Pro for 93,000 points (using barometer for 4230 points for $25 Myer gift card, that's only about $549. If you use the Points + Pay slider to reduce the points to 5,000, you only have to pay $520. Not sure if it's a mistake or just clearance, but I ordered one Sunday. Hasn't shipped yet, but should in the next day or so.
Price error (moved to forums): Emails are now coming through confirming the price error. As compensation Qantas are providing 2000 points and a 20% discount code for those who unsuccessfully ordered.