Oh I can seriously believe that this has not sold out yet. . . Mobley is just enough of a second string seller (not player!) that they aren't flying off the shelves, considering that the cds were out in Japan and/or America as well, as noted above.
Also, this could be like the Woody Shaw, Michael Cuscuna may be personally keeping this going til every set that is possible to be sold is sold, for the music's sate.