It adds a lot to the cost, and I am not protected by the New Zealand consumer laws in case something isn't right with the product. Way too risky for my liking.
I'm a Kiwi (now in the UK) and you're absolutely right. I always avoided forwarders because: no company warranty, no consumer protection, etc.
Forwarders are just grey market. Good for cheap items, but not so much for devices.
I miss the Kiwi attitude & the paradise on Earth environment, but I certainly don't miss being left out of the rest of the world, no easy access to products & services and long shipping times besides.