I note that the book review section of this site rates this book quite highly, with a present favorable rating of 96%. Most respondents regard it as being well worth the money. However, I note that Amazon sellers presently have only one new book available for $680.82, with used copies starting at $114.90. As someone who has read over 120 books on trading and the markets, I have concluded that, with very few exceptions, they are all somewhat similar and worth fairly little. And so the question is: What is so special about this book that gives it value despite its comparatively high cost?