I had exchanged emails with John Kitakis at Ko'olau Ukulele. For 2007, they will be discontinuing their all-Mahogany parlor-sized nylon-string guitars: the PG100 and the PG100E. I want one, but I can't justify (to my wife ) adding another instrument to the four that I have now.
John may still have limited stock of these on hand. He offered me a 50% discount off suggested retail, $179.95 and $239.95 respectively, plus $25 shipping to the mainland.
For 2007 onwards, they'll be focusing on all steel-strings and the Mahogany models will be replaced with Koa models.