First off, labeling this book "for 3D professionals" is almost insulting to those who actually do CG on a daily basis. This book is clearly just a primer and nothing more. There are no advanced techniques or anything you can take back with you in the professional arena, especially if your models are targeted for animation. If you're looking for an advanced resource, look elsewhere. Maybe a good training DVD.
Second, saying that this book is about edge loop modeling is nearly as misleading as saying that a clothing catalog is about the fashion industry. Sure, the book discusses the concept of an edge loop, but the author clearly tosses the knowledge aside when it comes to actual practice. The model is clean looking, but not at all professionally constructed. Again, the idea of actual edge loops, such as those usually found around the key joints, is nearly a foreign concept here.
The book does NOT give you a strong enough foundation because there is no practical application of actual edge loops philosophy that would be required in a production ready model. If you've ever seen the work of Bay Raitt, Steven Stahlberg, Liam Kemp, or even 95% of game artists, you'll notice how misguided and underwhelming this book's content really is.
Simply put, the concept of proper topology with an eye to deformation (animation), detailing/sculpting, or repurposing is non-existent in this book.
If, like me, you work with CG characters on a daily basis, this book is pretty much a joke. You can find much better information online and on CG industry forums - for free. You can even learn more by simply examining the wireframe screen shots of a good character artist than you can this book.
Again, if you're after "professional" techniques and advice, look elsewhere. The D'Artiste books and the Kurv/Gnomon DVDs spring to mind. They cost a little more than what's being charged here, but you certainly get what you pay for.
Being as objective as possible - putting aside the misleading title and the questionable example model, the book doesn't even stand up as a good character tutorial. It's very basic, full of gaps, and limited in scope.
If you can get this book for a used price... Maybe. You'll have to go to the next level all on your own though. There's nothing professional about this book. Its too amateurish.