You could easily get by on $2 of rice and beans a day.
I bought a ten pound bag of chicken hind quarters for $7.50. IIRC, it was 18 pieces thighs and legs,
A ten pound pork loin for $1.67/pound, .42 cents for a four oz. slice. That is 40 slices of pork. Cooks to 3oz. but keeps you in meat protein.
50# bag of rice for $27
50# bag of pinto beans at $28
People have no idea how long a person can eat off that. Add $10 worth of spice and $20 worth of canned tomato paste, etc. and there are maybe 20 recipes that you can eat for 2 to three months. Add a box of oats and $20 worth of eggs and you can eat good. Add a $10 box of instant mashed and $10 box of freeze dried hash browns and a $10 gallon jar of freeze dried onions and you eat like a king.