the idea of buying locally-grown foods (usually but not always
organic) has become a popular topic in food circles; the term
"locavore" is sometimes used to describe this philosophy. The link
below takes you to an article in the latest issue of a local weekly
newspaper, "Pacific Sun". Said newspaper is published in San Rafael,
California, and has as primary circulation area, Marin County,
California (a very high income area indeed). It describes an
experiment in which the author in fact ate nearly exclusively locally
grown/produced, organic foods for a week. The estimated cost was
almost US $300 for a week of food for 1 person, suggesting that, at
least at this point in time, the locavore movement is aimed at the rich:

http://www.pacificsun.com/story.php?story_id=796

PS the link above might work for only a few days, so suggest you read
it while it is available.

Tom Billings