Our good friend Paula at Monroe on a Budget posted a link today to a CNN blog. The blogster was assigned to eat on $30 a week...the amount of the average SNAP/food stamps allotment. As you'll see if you follow the link, that was $30 for one person. Be sure to read at least some of the comments (there were over 700 at last count!).
When you click on the link, you'll have to scroll down the page a bit to find it.