I feed chicken, beef, pork, and turkey and try stick with meat that is under $2 a lb. Even though it is only four types of animals I am feeding, I use a lot of differant cuts, so they get a lot of variety in that.
An example of what I use -
Chicken: heart, giblets, liver, neck, drumstick, back, breast, feet, thigh, wing
Beef: the actual meat, heart, kidney, liver. I just found a source of lung, tripe, most all secreting organs, and possibly tongue for cheap
Pork: heart, actual meat, just found a source of kidney, liver, brain, most all secreting organs
Turkey: Drumsticks, sometimes I can get heart/liver/gizzards
I am also trying to contact Draper Valley Farms as they have several plants close to where I live. What I want to know is what the plant that is 3 miles from my house does - I asked some people and they said it was a) where they hatch the chicks or b) where they process the meat. So if it is where the chicks are hatched I am going to see if I can get the dead chicks from them which I would feed as whole prey. If it where they process the meat then I can get much more variety (hopefully!) - I'd love to find a source of chicken lungs etc
The total cost, for one of my adult cats, is roughly $0.30 - $0.50 a day (it depends on the time of year as they are barn cats). Then there are the kittens who are eating 10-20 oz a day which gets more costly obviously!