We have always been on a food budget and 2 of our 5 kids were boys who had hollow legs, especially when they started playing football. I always buy dry beans to soak for chili, burritos, soup or whatever. I get twice as much for more than half the price. I also to find farmers who sell them at bulk amounts. Then I can store them for quite awhile. I put them in seal a meal type bags and vacuum seal them.
For the tortillas which are about 1.50-2.00 a dozen which we would need 2 pkgs, I started making my own, therefore also purchasing flour in bulk form. Recipe: 2 Cups flour, 1/2 tsp salt, mix, 1/4 cup shortening, mix. 1 cup of cold water mix, pinch off about the size of a golf ball, roll, and fry in dry skillet till it bubbles, turn and fry dry about 15 - 25 seconds. Good!
When the store has two for one on tortillas, I always stock up on those too.