It is worth the money in my opinion. One reason the cost is high is because of the CD rom that comes with it for using her charts and sheets, etc. Some you can modify to suit yourself. The book brings out some good points and the chapter called THE BLACK HOLE is very good. The book will validate you sometimes and give you things to think about at other times. If nothing else it helps you evaluate your own teaching and your own way of doing business. It will get your mind going and you can take or leave whatever ideas are presented.