New Zealand Suzuki Institute
I highly recommend you join the New Zealand Suzuki Institute so you receive their newsletter and can attend their events.
Piano tuners (in New Zealand)
Buying pianos (in New Zealand)
Pianos can be bought new or second-hand. from various shops around New Zealand:
Lewis Eady in Auckland (sells new and second-hand pianos)
Hoekstra Pianos in Christchurch (sales, tuning and rentals)
The Music Warehouse in Lower Hutt (piano sales and rentals)
Piano Works in New Plymouth (sales, rentals and tuning)
Mr Music (Neville Claughton) - showroom of reconditioned second hand pianos in Nelson
Many nationwide music shops like Music Works, RockShop, Music Planet and KBB music also sell a range of accoustic and digital pianos.
Second-hand pianos are also available on Trademe but if you are considering this, I suggest paying a piano tuner to go and check the piano before you buy it.