Price Discrimination

1. Introduction to Price Discrimination

Price discrimination occurs when a monopolist charges different prices for the same product to different consumers, even though the cost of production remains the same. The goal is to maximize profits by capturing consumer surplus and charging each group based on their willingness to pay.

2. Conditions for Price Discrimination

For price discrimination to be successful, the following conditions must exist:

1. Market Power
   • The firm must have monopoly control to set prices freely.
2. Different Price Elasticities of Demand
   • Consumers must have different willingness to pay.
   • Some are willing to pay more (inelastic demand), while others are price-sensitive (elastic demand).
3. No Resale Between Consumers
   • The monopolist must prevent arbitrage (reselling at lower prices to high-paying customers).
4. Market Segmentation
   • The firm must be able to identify different groups and charge them separately.

3. Types of Price Discrimination

(i) First-Degree Price Discrimination (Perfect Price Discrimination)

• The monopolist charges each consumer the maximum price they are willing to pay.
• Captures entire consumer surplus as profit.
• Common in auctions, customized services, and personal negotiations.
• Example: Car dealerships charging different prices based on customer willingness to pay.

(ii) Second-Degree Price Discrimination (Quantity-Based Pricing)

• Prices vary based on quantity purchased, with discounts for bulk buyers.
• Encourages consumers to buy larger quantities.
• Example:
  • Electricity and water pricing (lower rates for higher usage).
  • Buy-one-get-one-free (BOGO) offers in retail.

(iii) Third-Degree Price Discrimination (Market Segmentation)

• Different prices are charged to different consumer groups based on their location, age, or income.
• Most common type of price discrimination.
• Examples:
  • Student & Senior Discounts (Lower movie ticket prices for students).
  • Airline Pricing (Different fares for business travelers vs. tourists).
  • Medicine Prices (Lower drug prices in developing countries than in developed nations).

4. Graphical Representation of Price Discrimination

Third-Degree Price Discrimination (Market Segmentation)

Explanation of the Price Discrimination Graph

This graph represents third-degree price discrimination, where the monopolist charges different prices in two separate markets (Market A and Market B) based on consumer demand elasticity.

1. Market A (Higher Price Market)
   • Blue AR (Demand) Curve: Consumers in this market have a higher willingness to pay.
   • Red MR Curve: Marginal revenue declines below AR.
   • Equilibrium Price (P*_A) is set higher because demand is less elastic (consumers are willing to pay more).
   • The monopolist produces less quantity but charges a higher price.
2. Market B (Lower Price Market)
   • Green AR (Demand) Curve: Consumers in this market are more price-sensitive.
   • Orange MR Curve: Falls below the demand curve.
   • Equilibrium Price (P*_B) is lower because demand is more elastic.
   • The monopolist sells more units but at a lower price.
3. Marginal Cost (MC) Curve (Black Dashed Line)
   • The firm sets MR = MC in both markets to maximize profits.
   • Since the cost of production is the same, the monopolist charges different prices based on market segmentation.

Key Takeaways

✅ Monopolists maximize profits by charging higher prices to inelastic demand consumers and lower prices to elastic demand consumers.
✅ Third-degree price discrimination is common in airline pricing, student discounts, and global pharmaceutical pricing.
✅ Price differences are based on consumer willingness to pay, not production costs.