Farmer's Markets have become a popular occurence in Los Angeles. Santa Monica started the movement, and now every town and neighborhood has a day set aside for "Farmer's Market".
One of the oldest is the Hollywood Farmer's Market, which runs every Sunday from early morning until, approximately, 2:PM. Four city blocks are shut down in the heart of Hollywood proper: Ivar between Sunset and Hollywood, and Selma between Vine and Cahuenga. If you're planning a day in Hollywood, consider a Sunday. That way you can pop over and see the locals puttering about.
What to buy There are two bread stands, and one does an outrageous "Rosemary Loaf". I can't remember the name, but it's NOT Bezian. Does that make sense?
Lately, a flea market has been popping up adjacent to the Farmer's Market, so you'll have plenty to see and do. Food stands provide breakfast to many shoppers and live bands have been known to pop up. There's even a pet adoption agency camped out at one end.
What to pay By nature, most of the produce is organic, so prices might be a slight bit higher than some supermarkets, however, the quality is far superiour - and, if you arrive near the end of the market, farmers are selling off their fruit and vegetables at fire sale prices just to save on trucking it back.