Coca

I've found this fantastic site, COCA. The Centre Of Contempory Arts.
It's got a great selection of New Zealand artists. You can buy or hire artworks from them, hiring starts at around $275 per year. The artworks are reasonably priced too.
As always, I'm loving Dick Frizzell, also really like the work by Ian Scott, Rudolf Gopas and Quentin Macfarlane.