They have been classified above based on first impressions and recent contact or lack of contact in the case of no response. If anyone reading this page would like to comment, I can be reached by email . As things change I'll update this page. Unfortunately there are few retail hobbyist electronic shops in New Zealand. Remember David Reid Electronics, they were good for small numbers of standard components.
Mail order seems to work.
I've found that for small numbers of standard components there are a few American outlets that can supply just about everything. You just have to be careful that you don't order anything too heavy. I once ordered a roll of ribbon cable without thinking. The courier charge increased the price to almost local trade price. Delivery is usually by courier in about 10 days.