"Perfect price discrimination" occurs when each consumer is...

"Perfect price discrimination" occurs when each consumer is charged his or her maximum price for the product. When this happens, the monopolist is able to capture the entire consumer surplus. Draw a demand curve for each of six consumers and compare $(a)$ the situation in which all consumers face a single price with $(b)$ a market under perfect price discrimination. Explain the paradoxical result that perfect price discrimination removes the inefficiency of monopoly.

Key Concepts

Allocative Efficiency and Deadweight Loss

Allocative efficiency occurs when resources are distributed in a way that maximizes total welfare. Under uniform monopoly pricing, the exclusion of some consumers leads to deadweight loss, which is a loss in total welfare. In contrast, perfect price discrimination can theoretically eliminate deadweight loss by ensuring that the monopolist serves all consumers whose willingness to pay exceeds the marginal cost, thereby increasing the level of output to the socially optimal point even though it simply reallocates surplus from consumers to the producer.

Consumer Surplus

Consumer surplus represents the difference between what consumers are willing to pay for a good and what they actually pay. In cases of perfect price discrimination, the consumer surplus is entirely captured by the monopolist, eliminating the typical surplus enjoyed by consumers under uniform pricing.

Perfect Price Discrimination

This is a pricing strategy where a seller charges each customer the maximum amount they are willing to pay for a product. The monopolist's ability to perfectly price discriminate means that no consumer surplus is left over, as every transaction extracts the full willingness-to-pay from each buyer.

Monopoly Pricing

In a monopoly with uniform pricing, the seller sets a single price for all consumers, which typically leads to a reduction in the quantity sold compared to a competitive market. This creates an inefficiency because some consumers who value the product more than its marginal cost are priced out of the market.

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