I have a very fancy store by my house (catering to all the rich people in the area), and at the end of the day the mixed greens in a bag are 99 cents. 99 cents for enough greens to make two tasty salads for 2. Grab a tomato and an onion and boom salad for 1.50 per person. I suppose the investment of oil and vinegar might be like $15 but it last forever. Hell, chop up a boiled egg or two and you have a ghetto cob salad.