For anyone prepared to cook food themselves that sort of money could properly feed a person for a week using stuff like potatoes, pasta, rice, fresh/frozen vegetables, chicken, cheap mince (horse styleee
) oats, tinned fish, cheese, eggs milk etc.
Certain convenience foods, branded goods, red meats, takeaways etc. tend to be much more expensive and therein lies part of the problem - many people seem unable or unwilling to prepare simple healthy food for themselves.