Two-Part Tariffs and Profit Maximization Perfectly homogeneous (idealistic) markets. the first element is priced to extract all value from customers the same fixed entranc Tee foraintypes of customers] the second element is priced to recapture marginal costs [foods are charged separatelyl Heterogeneous (realistic) markets both elements extract value from customers in proportion to their willingness to pay taxi meters for both long- and short- dis customersT In fact, the metered fee provides the dominant source of profits for the firm in many implementations of two-part tariffs.