Saw this in my local, can't find any details of it online.
Cheapest new on booko is $34.39. They appeared to have plenty of stock, not sure if it's AU wide though, sorry.
It was this version;
http://booko.com.au/products/9781741698527
Cheapest from booko - UK version, different covers;
http://booko.com.au/products/9781407130293
I bought it from Target Edwardstown (SA) about 2 weeks ago for this price.