Membership stores are retail outlets that require customers to pay a fee to join and access their products and services. These stores often offer bulk items at discounted prices, making them popular for families and businesses looking to save money. Examples of membership stores include Costco and Sam's Club. Members typically receive a membership card that grants them entry to the store and allows them to purchase items. In addition to groceries, membership stores may sell electronics, clothing, and household goods. The savings from buying in bulk can offset the membership fee, making it a cost-effective shopping option for many.