Hello, I am a Yank but have spent much time in NZ over the last 10 years. I am the proud and happy owner of a Kapono concert uke made in Auckland by John Hewitt from Hawaiian koa (he ships it in and ages it in NZ in a humidified environment).
There are other luthiers producing ukes more recently in addition to those who have been there for years (Kapono, Beltona). Check out TradeMe for a sampling of what is available. There used to be just one partial page of items. Now many more!
I bought my first uke mail order in 2005 when we were in Oz. There weren't nearly so many options back then as there are now.
Happy Uke Hunting