I keep missing these and they sell out before I can get one. I'll just have to keep refreshing their pages a few times per day.
In the meantime, I've hacked up a workable substitute, borne from the ruins of the Schoenhut fake Flea, inside which I had previously installed an UST pickup/preamp ( just could not bring myself to throw it out, nor inflict someone else with such disappointment), and with bridge, nut and tuner modifications and the addition of some Aquila Thunder REDS, I now have soprano-scale GCEA Octave-Uke that is 1 octave below a regular uke tuning.
FYI, this means that instead of G3-C4-E4-A4, it is tuned G2-C3-E3-A3, so while not a true uke-bass, it sounds more like an upright bass like the U-Bass, despite being only an octave down.
I could not get DGBE nor EADG with these strings since they are too slack at 14" scale length. It sounds decent and it more playable and useful to me than the terrible soprano it used to be, and for the initial $30 I spent, I turned lemons into lemonade (since I already had all the other parts and materials from other projects).
This was partly 'just to see if it could be done', partly inspired by the efforts and results by fellow UU brother Yeelaberbin, and partly due to necessity being the mother of invention combined with the frustration of the instruments on Rondo selling out so quickly before I could get one each time.
I plan to put a show-and-tell video up once I get the time.
Maybe now I dont need one of these Rondo uke-basses any more? UAS has an almost fatal hold on me - OY!