Okay, so let's just go ahead and say it: eating healthy is not always the most financially viable option. It's no coincidence that the foods that are slowly killing us are the cheapest ones. Guess what. It's possible to get healthy, fresh, local food inexpensively.
Example: I just got a whole growing season's share of food for $50 and 25 hours of work in any of 13 local gardens per year. Can't beat that deal with a stick. And that's the beauty of CSA. Consult this list from Serious Eats for more ideas about fitting local products into your budget.
Get involved, get healthy. That's what we're talking about.