Price Discrimination: First, Second, and Third Degree

The economic effect of price discrimination is to convert consumer surplus into producer surplus. Every dollar of surplus the company extracts shows up as higher gross margin without requiring any new product. This is why software, SaaS, airlines, and luxury goods are some of the highest-margin business models in existence: they all rely on sophisticated price discrimination to charge each segment closer to its true willingness-to-pay.

Price discrimination requires three preconditions: (1) the seller has SOME market power (a true commodity producer cannot price-discriminate, the market sets one price), (2) the seller can SEGMENT buyers by willingness-to-pay, and (3) the segments cannot easily ARBITRAGE between each other (a student cannot resell their student-discount ticket to a full-fare buyer). Watch for these three together — they predict where price-discrimination margin lives.

Tiered pricing is not a customer-experience design choice — it is a microeconomic surplus-extraction mechanism dressed up as one. The same product sold at one price extracts the consumer surplus of the LOWEST-value buyer who still buys. Sold at three or four prices, it extracts much more. Investors who learn to see pricing tiers as discrimination structures, not menus, gain a sharper read on which businesses have hidden pricing runway.

First-degree discrimination is the ideal (one price per buyer); second-degree uses self-selecting tiers; third-degree segments identifiable groups. All three convert consumer surplus into producer surplus and widen gross margin without changing the underlying product. The presence and sophistication of price discrimination is one of the best leading indicators of structural margin power.