It looks like this CD (Hard Bop Academy) is kind of hard to find. Charly also released the Blakey session backed with a Max Roach session (presumably the same one) on a CD called The Hard Drive (different from the Bethlehem CD), which is also OOP but a little cheaper used.
Much as I like both Blakey (I have more CD's by him than by anyone else) and Roach, both of those sessions are dogs, relative to their other work of the period.
I think you are being a bit harsh on theses albums. Not the most exciting things by these artists but nevertheless a very pleasant listen as you'd expect with Hardman, McLean. Dorham and Mobley.