New Zealand is ludicrous marked up in terms of consumer goods, and I’ve just checked pricing. The cheapest is resistive electric. Then fractionally more is gas. Induction costs approximately double for 4 hobs (for 2 hobs it’s about 50% more than resistive).

If you count installation, both electric options are going to be less expensive than gas. If the big cable needs running for induction, the cost might be similar to gas.

Not factored in, cleaning. My god is induction nice to maintain.