After missing out on this deal : https://www.ozbargain.com.au/node/589317
I've been on the lookout for Bose 700 under $400. Found them on special at the qantas store. Not as good as the amazon deal but stock available in black and silver.
Qantas store now charge for delivery (I think they didn't before?) which is 2250 points which I have included in the price above.
Alternatively if you got lots of qff points it comes to 69960 points deliver.