I purchased all TPR Review science books, and have finished a first pass content review using the same. I concur w/ other posters that
- please do take pre-reqs otherwise as these books are just as the name implies -- 'review' books (i.e. you've read this stuff either recently or eons ago, but need to brush up or relearn, not learn from scratch)
- only the Bio books goes into great length; others are reasonably okay as well. I found Ochem to be utterly unhelpful (atleast for me; as it lacked explanation on details of mechanism; why a reaction proceeded in certain way etc)
- with that said, it does comprehensively cover the review scope of MCAT
should you purchase these, please do supplement it w/ other books that offer ample passage practice
hope this helps