I know my brother, who lives in California, usually pays far less than I do to fly on Air NZ.
Sometimes when on Skype, we will go to our respective Air NZ websites and ‘book’ seats on the same flights just to see how much less he gets charged. It’s usually a significant difference.
At the end of the day, there is no way I am parting with NZ$12,000 to fly Business to London so it would have to be about 50% of that before I would consider it.