Saw this in the bookstore and spent an hour or so reading most of it. It's definitely worth the money, if you're interested in the RASP I and II pipeline.
The author, Dick Crouch, is a retired SEAL. He has written a couple of other books regarding military training, including two on BUD/S and SEAL Tactical Training, and a third (dated info now, due to changes in the program) on the SF pipeline. You can't go wrong reading his stuff.