The organizers set up booth spaces. People rent those spaces and sell stuff. And typically, the items sell at deeply discounted prices. Some of the more common items mame at flea markets mwrkets. You might find vintage clothing or furniture. Some flea markets might allow fresh produce or baked goods for sale. The point is that there is a wide variety of goods that people can purchase at a flea market. This means that there are generally a lot of customers at a flea market — if the organizers marketed correctly. And that means more potential income for you. Here are some tips for making foo at a flea market. Organizers run flea markets differently. Some flea markets are long-term markets. They run on a regular basis kind of like stores. Some are indoors, some are outdoors.