How to ship large furniture items within New Zealand?

There are 2 ways you could explore -

  1. Create separate shipping profiles for different products. This will allow you to set up different shipping rates for different products. Here you have a limitation that you can only create maximum 99 shipping profiles.

  2. Use an app like ShipMagic which allows you to set up unique shipping price for each product in a product metafield. You can also display different rates for different regions using zipcodes.