The fact sheets kinda bogged me down as well. I found this page pretty useful: Link hidden: Login to view
It has all the information you need to know about importing into New Zealand.
New Zealand has a Import Entry Transaction fee of NZD $22.00 (GST inclusive). This I believe is the fee you pay just to import commercially.
An Import fee may also charged. In order to determine whether import duty is applicable to imported goods, Customs considers the following:
* Tariff classification