It took a while but I finally found one I liked at a reasonable price. My dream bike
Insurance is problematic to say the least over here. However, I had the very good fortune to get in touch with Dave Hewer from Kiwibike Insurance who gave me a very good deal.
He is a practical and honest man to deal with and I would recommend any New Zealand bike owners to get in touch with him; the prices were way better than any of the mainstream insurers, who are, in the most part, not interested in us in any case. Here's the website link, check them out if you live here in New Zealand: http://www.kiwibike.co.nz/