I think DFA uses a program to help calculate the ratings. It would probably require a new one to be made to include pricing. The formula used is based solely on ingredients, not where they come from, not who makes the diets, not the min & max amounts of everything.
It’s a great starting point, but it’s also very limited with information because it goes only on what’s printed on the labels. That info is very minimal.
This is why I start here, choose a few, contact the companies with my questions and compare prices at local shops. It’s a lot of work, but their health begins with the best nutrition I can afford.
