Abstract: A prepaid commodity purchase system comprises purchase of a predetermined commodity, such as unleaded gasoline for example, by a purchaser, and subsequent delivery of the commodity in kind to the purchaser at designated outlets. The purchaser transfers funds to a commodities marketer via an internet website wherein marketers offer their products in predetermined quantities at predetermined prices in a competitive market environment. The marketer or its agent establishes a commodity purchase account on behalf of the purchaser. The purchaser subsequently receives the purchased commodity in kind at designated outlets. The receipt of the commodity is debited against the purchaser's prepaid commodity purchase account. This invention allows consumers to purchase large quantities of product at predetermined prices for future delivery.