I don’t live near any cheap stores

Me and my boyfriend just rented an apartment together but to our surprise we don’t live near any stores that are economically friendly. The nearest Walmart is about 31 miles away and the nearest dollar General is 27 miles away. The only stores that are close to us is a Target that is right around the corner and a Whole Foods and Publix that are behind the target. The Walgreens is the closest thing we have to a dollar General. Any tips on how to save money at these expensive stores?