This sounds like it would take a lot of time and knowledge to successfully pull off. I suppose it’s not uncommon for people to buy certain food products based on the notion that you need to eat certain things to stay healthy. Basically, buying your fruits and vegetables as well as frozen or can goods. I’m sure with that thought a lot of people buy things based on what the labels tell them in terms of the nutrients they are getting.
I was talking to a person who mentioned that to save money she really researches ahead of time on what exactly is the best food type to get for a certain nutrient so that she can save money while still getting everything that she needs. Example, I think it is common knowledge that if you are trying to get vitamin C that a red pepper offers way more than say an orange. So in that sense, buying that one pepper is better than buying saying a couple of oranges if that was your goal in terms of the nutrients.
Makes sense in many ways financially, but again it sounds very hard to implement that as your lifestyle as there is probably so much more to know. Example, if you cook certain things you lose nutrients, etc. Then again, maybe even studying something on the topic for a simple month or so could be a good investment if you feel that it will save you a lot in the end.