All details are on the IRD website.
Thanks, but any experience from others? That's why I asked on this forum to cross-reference with that info
Many people here, including myself, who have single or multiple businesses. You've done no business, it doesn't get any more simple than that and details are here How to Apply for a Notice of No Objection to a Company Being Deregistered
Fill in a form and pay $270. I've just deregistered another business that had been active previously. That was done through my accountant at a fraction of the expat charge you were quoted. Mind you I've never paid anywhere near what people here have to start a company either. So keep it simple as shown above or complicate it for absolutely no reason at all. Your choice.
Fantastic, thanks a lot for your post