I don't have the time nor the desire to go through the newspaper clipping coupons, but I do usually skim through local grocery store flyers that come in the mail. Usually there is a sale on some particular meat that I like, and then I stock up. I can usually get ground beef for $.99/lb., leaner hamburger meats for $1.89/lb., chicken and turkey breasts for $1.99/lb., beef sirloin steaks for $2.50/lb., salmon steaks for $2.99/lb. along with other treats (I love crab legs). Because as with all expenses, the cost of groceries varies from one city/region to another, you will have to determine what would be considered good sale prices on meats for your area. And tuna's always cheap. To avoid the excess saturated fat and cholesterol, I like to use Light Miracle Whip rather than regular mayo in my tuna salad. Also, creamed tuna is good. That is tuna cooked in a pan on the stove with milk and oil (Canola oil is a good choice; has a lot of GOOD fats). I make meal replacement shakes with peanut butter or canola oil. And at proteinfactory.com, the various types of high quality protein powders I like to use sell for between just over $4/lb. to just over $8/lb. Definately a bargain in my opinion. And when you're grocery shopping, try the generic versions at least once. Sometimes the off brand (or store brand) is manufactured by a name brand and just given a different label. Even when that's not the case, I have found many grocery products in which the generic version is as good tasting as the name brand version.
Just my $.02. Hope I was of some help.