I bought this book in India after a course at the Krishnamacharya Yoga Mandiram, interested by its logical presentation of the techniques of observation for the physical assessment phase of a Yoga Therapy consultation. For this alone, the book is worth its price.
However this only makes up a small part of the consultation process, and about half of this book, so the absence of a full exposition of the system of Yoga Therapy is deeply disappointing. It reads as if the author was very enthusiastic and focused for the first half of the book, then realised how big a job it would be to do this topic justice and simply filled out the rest with surface thoughts and musings.
Buy this if you're happy enough without a complete and detailed insight to the process of Yoga Therapy in the Krishnamacharya tradition.