All of the people objecting to your comment seem to believe that the poor have no access to credit. Obviously, they do, often to a dangerous extent. And obviously, a wise use of the same credit that gets plastic trash at Walmart could get bulk food. But there are people (and not just "the poor") who simply don't plan ahead, ever, and sure don't plan ahead something that will require very bland-sounding food prep, week after week after week.