For Orders over NZ$1000, you will have to pay duty and GST plus the IETF and MPI levy when the goods arrive in New Zealand.
Once your order arrives in NZ, it will be held at NZ customs. See below on the process of releasing your parcel from NZ customs:
1. Apply a Client code through the following link -
https://www.customs.govt.nz/personal/send-and-receive-items/customs-number/
2. Advise us, via email or call (0800 888 423), of your client number and we will contact NZ customs to release your order.
NOTE: “For duty and GST calculations, if you import multiple orders in a short time period from the same supplier and address, (Customs) consider them to be a single shipment.”