One of the cheapest ways to buy vegetables is to go to a farmer's market. Farmer's markets usually have lower prices than grocery stores because the fruits and vegetables are sold directly from the farmer. Another option is to grow your own vegetables. This can be done either in your backyard vegetable garden. If you don't have enough space for a garden, you can also grow vegetables in planter boxes on your patio or balcony. If neither of those options is feasible for you, then find farms or orchards that allow you to pick your own or join a community garden and start growing fresh vegetables with like-minded people. Another option is to join a CSA program.