Colloquial, non-industry-specific term for a rate structure in which each customer in a given class is charged the same rate for a commodity as every other customer, regardless of the cost of serving different customers in the same class. Also refers to rates set for all customers in a given territory regardless of their distance from the point where the given service or commodity is supplied. Derived from the traditional practice of pricing postage identically for all deliveries from all parties regardless of location or cost of service. The tariff for the transmission of natural gas is a postalized tariff meaning it is the same tariff for all consumers regardless of the distance the gas needs to be transmitted through