Fred,
Thanks for sharing the links. I don't really have the skill to do a translation, and I would just be popping it into google to translate it myself.
As for the actual instrument itself, I received a Leilani concert ukulele 2 weeks back. With shipping to Japan, the ukulele worked out to be about $200 US dollars equivalent. This would be their cheaper type of ukulele, and they seems to have a little more expensive ones at around the $300 to $400 dollar range. The main difference with their more expensive uke is that it is made with Hawaiian wood and has a higher quality bridge. The ukulele I received was very well packaged and came as promised with a gig bag and electric tuner. The fret board seemed nicely set up as well as the frets, and the tuners are those new covered type metal gear tuners. The bridge is perhaps not the best quality as it is a light dry wood that you see on less expensive models - but I suppose I could upgrade it at some point. The aquilla strings were already on the instrument, but losely strung allowing the saddle on the bridge to shift (it was kind of sticking out). But, it could be moved back into the correct position for stringing by hand. The saddle was too high though and will need adjustments, and there is a small nick on the neck by on of the tuners, and another minor nick on the body. I probably made too much of a stink about these issues (and unfortunately I complained about the saddle sticking out before I knew that saddles are not glued in place). However, the salesman (I think over-generously) offered me a 30% discount on my next order and an apology.
Whatever history Leilani has had, it does not appear to be designing new models of ukulele and has only about 5 or 6, either soprano or concert only, available through their website. While I have not tried their higher end ukes, the company seems to appeal more to beginner ukulele players who want to buy something playable and do so affordably.
So overall, there are better ukes out there, but not a bad deal for its price and excellent customer service.