What is Price Discrimination?
Price discrimination charges different prices to different customers for essentially the same product based on differences in willingness-to-pay. Three degrees: First-degree (perfect) — every customer pays exactly their maximum willingness; rare in practice but approximated by negotiated B2B sales. Second-degree — different prices for different quantities or features (volume discounts, freemium tiers, bundling). Third-degree — different prices for different segments (student discounts, senior discounts, geographic pricing). Effective price discrimination requires (1) ability to identify segments with different elasticities, (2) ability to prevent arbitrage (resale from low-price to high-price segment), and (3) market power. Done well, it captures more total surplus than uniform pricing.
How Price Discrimination actually works
The framework breaks down into the following moving parts. Knowing what each piece is — and what it is not — is what separates a B-grade answer from an A-grade answer in a written assignment.
- First-degree — every customer pays maximum WTP
- Second-degree — by quantity or feature tier
- Third-degree — by identifiable segment (student, senior, geo)
- Requires segment identification, arbitrage prevention, market power
- Often controversial and sometimes regulated
A worked example: Airlines
Airlines are masters of price discrimination. The same Boston-LAX flight might sell first-class at $2,500, business at $1,200, premium economy at $700, economy main at $300, and economy basic at $180 — all on the same plane. Restrictions (no refunds, advance purchase, Saturday-night stay) separate price-sensitive leisure travelers from price-insensitive business travelers. Saturday-night stay was specifically designed to identify leisure (would stay) vs business (wouldn't). Modern airlines use AI-driven dynamic pricing to extract additional segment surplus. The total revenue from a fully-discriminated flight far exceeds what uniform pricing would generate.
Don't lose marks for these
- Discrimination that customers perceive as unfair (backlash)
- Failing to prevent arbitrage
- Regulatory violations (Robinson-Patman Act in B2B, civil-rights protected categories)
How to use this on the exam
Score-maximizing moves
- List three degrees
- Cite airline example
- Identify arbitrage-prevention requirement
When to use Price Discrimination (and when not to)
Use Price Discrimination when your assignment asks you to analyze, structure, or recommend — and when you have at least two data points to populate every cell of the framework. Skip it when the question is asking for a numerical answer or a single recommendation, since Price Discrimination is a structuring tool, not a calculator.