We were in Sam's Club yesterday and bought exactly the chicken Bob described before reading this thread. Our store had freezers full of it (two big ones). As a matter of fact, I noticed all the meats including top end steaks were well stocked. I love those boneless skinless breasts for grilling and smoking. They seem to always be delicious. My wife just told me that the regular stores we have would be priced at $2 to $2.25 per lb, so they aren't as expensive as Bob mentioned, but still a very good deal.
One of my diet foods is beans. I love all kinds of beans: pinto beans, black beans, navy beans, great northern beans, kidney beans, ad infinitum. Sam's has 6-packs of 12 oz cans of pintos and black beans at around $4.50 or $0.75 per can. That's way cheaper than a 12 oz soda out of a machine and far better for you. I dump a can of black beans into a bowl, add some spices and chopped onions, then heat them in the microwave for 3 or 4 minutes until they are steaming hot. Sprinkle a little Parmesan cheese on top and the beans are great alone or with cornbread or crackers. I don't do cornbread or many crackers on my diet, but I've found a 35 calorie rice cake is not a bad substitute. The single can of beans makes a great meal that sticks with you and is a staple of my dieting routine. Sometimes my wife will have a small piece of leftover ham or chicken breast that I chop up and put into my beans for an extra treat. I can fix beans and soups too, but that quick meal that costs less than a buck is hard to beat.