Correct me if I'm wrong but I believe the price for the 128GB models just went up overnight by NZ$200, most likely owing to the drop in value of the NZ$ over the past few months.
For instance I believe the iPhone 6 128GB went from $1299 to $1499 on the Apple Store (store.apple.com/nz)
A friend reported the same in Aussie yesterday for the 6+, and I believe the same happened here.
Not sure if prices for other capacity models was changed.