The best thing to do is buy in season...
Vegetable oils? Fake eggs? Atkins bars? Please! The best foods for you are generally whole. Eat real eggs and use full-fat cream, eat lots of vegetables sauteed in a bit of olive oil or coconut oil. These foods satisfy, these foods have more nutrients, and these aren't frankenfoods with strange ingredients. Go whole 80% of the time, and you'll do yourself a favor.
Having trouble staying under your allotted calories for the day, or feeling hungry when you do? Try adding a pound or two of non-starchy vegetables to your diet.
We can track any nutrients you want. Calcium, Potassium, Vitamin A, etc. The food tracker allows us to add any of this. Now, rather than going for the multi-vitamin first, I'm trying to see if I can eat foods that'll get me my Recommended Daily Allowance of nutrients I want to track. As a result, I'm eating more whole foods and I'm too full to have much space for "junk" food or foods without nutrients.
You'll save more by switching thing from premade/packaged foods to staple whole foods:
Fill up with whole fruits or veggies with high fiber or fat content. Natural fats, like that found in avocados, is much better for you than potato chips or other carbs. Sometimes I like to eat a whole mango as part of my breakfast. The water in the fruit helps me to feel full and not overeat.