The largest selection of Kamakas I have ever seen was at Larry's Music in Kapaa, Kauai. Sam is the guy there and he has played ukes for people and taken photos of them for people in the past. I know he has a beautifully curly soprano right now and a nice pineapple, and he always has tons of Kamaka tenors. He doesn't have a website but the Youtube has his email.
The youtube is at:
http://www.youtube.com/watch?v=eB5CxgiRwEc (Check out those gorgeous Kamakas in the background).
Also, Uke Minutes 34: buying a ukulele filmed part there.
http://ukuleleunderground.com/2009/01/10/uke-minutes-34-buying-an-ukulele/