You read the instructions on those gas heaters? Must be in a well ventilated place... what's the point?
One thing that you will find about NZ is that we have to much of everything, too much food, too much electricity. Because of this you'd think that things would be cheap, but no in a world of oppositeso having more supply than demand means that things are MORE expensive here.
I know there is the cost of shipping and economies of scale, etc. But we don't import electricity.