http://www.youtube.com/watch?v=q4BtGwWTcYw
500 series at 3:20 min in video above.
Okay, here's the scoop. I think many of you, below, are respectfully describing many different levels of Kamoa--from $200 models to $700 models. That's one thing about Kamoa, they are evolving and improving yearly, which is good, and they make no high-high end ukes, just middle price-range and low range.
I have previously owned a Donaldson custom koa soprano, a Koaloha standard soprano, a Koaloha soprano tenor neck, Kiwaya eco-soprano thinline, and received today: Kamoa 500P. (Just letting you know my comparisons).
This Kamoa 500 series is very good. Maple body, spruce neck, pineapple, as mmstan said, it's Martin style 3 fretboard, and friction tuners. Made in china, knotted bridge.
The sound is excellent. I wanted a new soprano, and I bought it from Elderly for $379 (on other websites, ebay, other uke sellers it's $579 or so--a relative steal, but Elderly seems not to have any more). It's awesome sounding once I got the wound low G off there (within about 20 minutes of arriving here_) and threw on some soprano KoOlau Golds. It weighs 14.1 ounces on my scale, so lightweight. It looks keen, and the finish is very good--not Kiwaya good, as the gloss is a tad, I don;t know, just not perfect. But no fret sharp edges (although not as smooth as Koaloha or Kiwaya), so it's very good.
The tuners are cheap. I love frictions, esp Gotohs. These seem to be no name, with cheap plastic tuner knobs. They keep tune, it seems, but with new strings, hard to know for certain. They are lightweight, though, I give them that, and that's important.
The sound is excellent, and it's strongest point. I find it mellow but strong, great intonation. I, personally (you can start throwing the rotten tomatoes now), find KoAloha sopranos, for instance, to be too barky, too harp-like at low volumes, and too harsh at high volumes (strong strums). I find none of that with the Kamoa. It sounds like a solid wood instrument, which it is, and not at all dead like a laminate. It rings nicely.
For resale, any of the ukes mentioned above will sell significantly faster and for closer to what you paid for it than a Kamoa...it's that simple.
So, had I been looking in the $500-$600 range for which this lists, I'd get a custom Donaldson soprano, or a Kiwaya, as mentioned below. For a great uke at a low price, a Bruko #6 or such seems ideal for about $280 or so (I have never played one).
But, at $375, it's the best soprano I have ever played for sound, even though the small details (perfect fretwork, perfect gloss finish, etc) are not perfect for the perfectionist.
Hope that helps, man.