According to this blog. To whit, the following slapstick comment:
"I do feel strongly that we’re not paying enough for food. That it is an issue, in part, of priorities. We only pay 11% of our disposable income on food in this country. That is less than anywhere else on Earth and that is less than any other civilization that has ever been on this Earth. For some reason we do not want to spend more"
One again I repeat, the people criticizing Wal-Mart are not the ones who need to shop there.