I did a little bit of research to come up with how many calories you get per cent you spend. Here are a handful of examples.
cals per cent
4.14 (Chef Boyadee Beef Ravioli large can - $2.50/1035 cals)
2.45 (Dintymore Beef Stew - $3.68/900 cals)
42.44 (50# rice Sam's Club $19/80,640 cals)...