The book has something like 10 PS passages (G-chem+physics) along with a few discretes, and about 10 BS (O-chem+Bio) and discretes, and I think 6 VR passages. I'm on vacation right now, so don't have the book in front of me or I would give you exact numbers.
When I was preparing I was taking a full length every other day, and I just counted all of the material in the book as a full length. If I had to do it again, I would have split the book up into 2 separate days because their is just too much material for one sitting, and the passages are pretty dense.
AAMC should still be running the promotion for that book. When I bought it, I just payed $45 and they throw in a CBT of your choice for free. I think I got AAMC 10 and the book for $45.
Aside from the passages there is some "fluff" but some of it is actually interesting to read if you like looking at matriculant data and salivating about how one day you will be in medical school😎