You misunderstand Walmart and business in general.
The reason to be in business is to make a profit. Keeping control of costs is one factor among several. The competition pays bloated union wages and will not be as profitable or perhaps even able to withstand the competition.
Walmart has devised a strategy to serve customers in yet another manner.
"I'm trying to go organic ... have a healthy lifestyle," the 40-year-old Huntington Beach resident said. "Here, they have herbs and vegetables and the prices are great."
At the same time, Walmart, a savvy marketer, recognizes that there is a certain segment of the populastion that wants to "go organic"...and lead "a healthy lifestyle".
Organic produce commands a premium price -- yet it is usually short of the quality found in non-organic produce. One is grown in a field that has been fertilixed and treated with pesticide, one has not. The crop grown in the former field is generally healthier and more productive, thus less expensive.
The latter is in demand because it is perceived as being "better for you", though it is not. And it is more expensive to grow...because the yields are lower.
As a rule, people anxiousw to pay a premium for "organic food" thru a supermarket are in the same group as the people willing to pay a premium for their electric power because the billing company is a "green energy" company.