I received my copy a few days ago, this book is fairly new. (november '01)
So far so good - this is 334 pages of straight knowledge. He compares and contrasts the various types of pumps, gives you points to ponder and situations to expect. There is no question that this is the ultimate source to begin your quest of forced induction. This book and a calculator is two definite must haves for your workshop/desk.
I believe it was worth the $30 and thought others might be interested to know about it.
Matt