Michelle Malkin (or one of her researchers) obviously read the earlier FR thread, from which she got the quote
Walmart has 10 pound bags of chicken for $5.
50 pounds of rice or bread flour are about $18 at Costco et al. (That’s enough calories to live on exclusively for over a month. Use the remaining $98/mo for nutrition.)
Mixed frozen veggies are $1/lb if you look (prices are, admittedly, going up). Mixed frozen fruits should be similar.
And, for my new favorite, http://Soylent.Me has a powdered meal-drink mix you can 100% live on for $2.80 per meal (recommended 4 per day). No, it’s not the “green” version.