Yes, it is possible that their licence was for limited number. No idea on the details though and I haven’t seen any comment from Jazzman Gerald to confirm either way.
Sound quality - pretty excellent, I have played all of the LPs through. The sound is a definite improvement on BGO in terms of fidelity/detail, probably helped a lot by the Abbey Road processes through to all analogue cutting. I’ll bet those studio masters sound fantastic and if I had a top notch streamer, I’d be very tempted with that option.
The box version of ‘Shades’ and ‘Dusk Fire’ are in stereo, whereas the Columbia originals were mono. One thing I did notice was some ‘ghost echo’ before tracks on the reissues. An outcome of the new cutting process, perhaps?