If the coaching sessions are that valuable, then it's like the paraliminal sessions aren't really complete without them.
Cost is a prohibiting factor for most from purchasing the larger paraliminal "sets". By offering them individually, people could build a library of Coaching sessions the same way they build a paraliminal library... a few at a time.
By offering another option, customers as a whole would ultimately be better served wouldn't they? It would lead to far less confusion as to how the tapes could be used for the greatest potential. And isn't maximum potential the ultimate goal???