It's new and complicated territory for the USDA.

Wal-Mart is challenging stores like Whole Foods with a new line of cheaper organic foods.

What do you think of organic groceries? Worth paying more for or a waste of money? Our experts offer advice to a listener from Atlanta, Georgia. See what they say and tell us whose side you're on.

I never know when it makes sense to shell out extra money for organic foods. It's one of the reasons I started working on the story for Marketpla…