Given the strength of the Aussie $ vs the Kiwi $, and the fact that the WOW HD NZ store offers free postage, there are some bargains to be had, particularly in the DVD/Blu-ray department if you're willing to buy two items. These are two that caught my eye:
Lord of the Rings: Extended Edition (Region B Blu-ray/R4 Bonus DVDs) $32.29NZ/$29.16AU if you buy something with it
http://www.wowhd.co.nz/blu-ray/lord-of-the-rings-the-motion-…
The Hobbit: The Desolation of Smaug 3D Blu-ray Steelbook (Region B) $22.10NZ/$19.96AU if you buy something with it
http://www.wowhd.co.nz/blu-ray/hobbit-the-the-desolation-of-…
Many other bargains on the site if you hunt around, hope you find one (although two is better!)
Free postage to Australia when you spend over AU$80. Standard free postage is NZ only.