First about me b/c you can't understand an investor's book review without understanding the investor. I have been reading about investing for twenty years and I have probably been a retail market participant for twelve to fifteen years, mostly in strategic asset allocation. I see myself as an investor and not a trader. I have branched off recently into individual stock picking. I bought the book primarily b/c I was looking for information on how to improve my selling decisions. (As an asset allocation guy, I rarely sold anything.) This book certainly fit that bill and the information provided helped me in developing my checklist for quarterly monitoring of investments and clarifying when and why to sell. THe realization that even the pros are only right 50% of the time means they are wrong the other 50% literally blew my mind. As a novice retail investor, I need to always be aware that more than likely any single pick is wrong. This is tough pill to swallow, so I will be reading this book over and over.
It is somewhat rare to find information on what works in selling in books on 'investing' for 'investors'. It may be more prevalent in the books for 'traders' on 'trading', but I don't know b/c that is not my style and not what I read.
I am a value guy, as well, and I found that cost of the book to be a 'good value' for the info I gleaned from the book even though I read whole thing in three to four hours. Knowing what I know now, I'd still buy it again ;-)
That said, if you haven't read What I Learned Losing a Million Dollars, you will want to read it as well.