I shop at an ethnic market too. Yesterday I purchased about 14 pounds of meat for $35. Pork, chicken and steak. Today I shopped at a local health food store. We bought one 4lb turkey breast for $35.
By the way, everyone shopping in that ethnic market was thin. I actually noticed it. I think that healthy food habits have much to do with intact, close families, where parents cook for their families and teach their children to cook.
I think if you are going to teach nutrition it might be a good idea to bring back all the home ec. It has always cracked me up that there's a page devoted to how to do laundry in the orientation materials at the university where I work. These kids graduate high school with absolutely no life skills. A class in how to balance a check book, use credit wisely and save for the future would also be valuable.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.