I like shopping at farmer's markets since the fruit and vegetables are usually more affordable priced than those you get in the supermarket. It's a good way to save money.
Vegetables- Image via Neonbubble
You are also more likely to see unusual produce like cupuacu or lovely locally grown foods that are cultivated in small amounts- when you head to a venue like this to do your shopping. In addition to saving money and seeing unique produce, you always get fresher fruit and vegetables when you buy directly from the people who grow them.