Perfect Price Discrimination With perfect price discrimination, firms charge each customer the maximum price each is willing to pay in order to extract all consumer surplus. Thus, every point on the demand curve in this figure represents a price. The first few customers—those who value the product most—are charged a high price. The next customers are charged a slightly lower price, and so on, until the last unit is sold for P_C (point b). As a result, a perfectly discriminating monopolist earns profits represented by the shaded area P_CP_Tb. This is considerably more profit than the monopolist would earn by selling Q_M units at price P_M, represented by area P_CP_Mac.