I purchased this book because I needed help shopping and planning my meals. I work FT and I don't have the time or the need to bargain shop. The problem is I can go to the supermarket spend a couple of hundred dollars and not come home with any "food." We get snacks and a little of this and a little of that but I go to make dinner and there is no way that we have food for 3 meals a day for 4 people. This was a good planning book. Since money was not really an issue for us, I purchased slightly higher end items, like fresh whole wheat bread instead of day old white, soy milk instead of regular or kielbasa instead of hot dogs. I clearly ran over the suggested budget in the book but we: 1) spent far less than we normally do, 2) had "food" all week and a much better variety 3) felt more organized about what's for dinner issues.
Regarding saving money, I think I was looking for a magic trick. At the end of the day, it's mostly common sense things like shop at cheap supermarkets and use cupons. For us, how to get your family organized with food was very helpful.