I keep this book as a reference in my personal library. The invoice formulas are very helpful.
I walked into the Mercedes-Benz dealership knowing the maximum amount I was going to spend for a C230 Kompressor in July 2000, that's empowerment.
I want to sell this car and get a 2003, E320 or E500. I checked the Kelly's Blue Book and my car's valuation is $1800 higher (before taxes) than what I paid for it 2 years ago! I expect to just about break even when I sell my current car in August.
A negative note: The author is very repetative and (in every chapter) he constantly reminds you that all car salesmen are the lowest form of theives. I can put up with that, though, because the book worked for me. It's better than walking into a showroom naïve and unprepared.

I purchased a car where the saleman made $4 on the car. I used this same strategy to purchase a used car. About a month after I brought the car, it was totaled. I received about $300 more from the insurance company than I paid for the car! This book is excellent. This is probably the 5th or 6th time I've purchased this book. Everytime I hear someone is buying a car, I have to lend it to them (although I'm obviously not good at following up to get my book back). However, I don't regret one dime I've spent on this book. I'm about to buy it again because I'm getting ready to purchase another car and want to refresh! Take my advice -- DON'T BUY A CAR WITHOUT THIS BOOK.

The advice given in this book helped me save thousands on my new car purchase. Dr. Sachs gives readers the inside information to sucessfully navigate the dangerous and stressfull world of car buying. For the first time, I don't feel like I was ripped off by a dealer. Don't buy a car without reading this book.