Thats gonna be real expensive, three bars a day. Id buy a 5lbs jug of protein from optimum nutrition, mix it with oats in a shakr and take it to school and work. THAT you can have three times a day, and you dont get nasty pigs feet cattle skin etc hidden as glycerol or other names.
Some carbs dont have that as 100% pure protein, but that one has carbs. So shakes are the way to go if youre looking for cost health and benefit.
Good luck, and get real food as well.