Very specific dates available, infact only one combination, but incase anyone was looking at jetting off for a while, the O/W price is available on the 21st April 2015, and the R/T is available 21st April 2015 -> 28th April 2015.
Cheap from Wellington, through Melbourne and Perth, and very short trip time, knock nearly 10 hours off the Emirates trip, haven't compared to other airlines though.