Abstract: Computer-implemented systems and methods for a consumer to buy gasoline at a predetermined price, comprising enabling a consumer to prepay an operator for a selected quantity of gasoline at a prepaid gasoline price determined by an issuer; issuing to the consumer a gasoline debit card for identifying the consumer in connection with gasoline purchases made using the gasoline debit card; enabling the consumer to purchase a quantity of gasoline not to exceed the selected quantity from the operator using the gasoline debit card; and reducing the prepaid quantity of gasoline indicated owed to the consumer by the purchased quantity of gasoline received by the consumer.