I think my budget was $50 a week, but that included odds and ends like toiletries and magazines as well as food. It also included meat, although not huge amounts. My staple meal was stir-fry, with lots of rice and veg and a small amount of meat (about 60-80g per meal). I would cut up the meat into strips for the freezer (I had a bar fridge with freezer space designed to hold a couple of trays of ice-cubes!) so something like a single chicken thigh would cover a few meals.

I also had a butcher that would sometime have whole wild rabbits for a couple of dollars, so I'd use the meat from those for a stew & make a soup from the bones.