Price Discrimination Is Why One Airline Seat Has Four Prices
Charging every customer the same price leaves money on the table at both ends. Nearly every pricing structure you encounter is an attempt to sort buyers by what they will pay.
The Problem With One Price
Customers value the same product differently. Set one price and two things go wrong at once: everyone who would have paid more pays your price instead, and everyone who values it below your price buys nothing.
The first group is money left on the table. The second is a sale that never happened despite the customer valuing the product above what it cost to serve them.
Price discrimination is any mechanism that charges different customers different amounts for substantially the same thing.
The name sounds unsavoury and the practice is mostly ordinary. Student discounts, off peak fares and enterprise pricing are all the same mechanism, and some versions expand access rather than restricting it.
The Three Degrees
| Degree | Method | Example |
|---|---|---|
| First | Individual price per buyer | Negotiated enterprise contracts |
| Second | Buyer self selects from options | Tiers, bulk discounts, versions |
| Third | Price by observable group | Student, senior, regional pricing |
Second degree is the most common because it requires no information about the buyer. You present options and let people sort themselves, which sidesteps the hard problem of knowing what each customer would pay.
Fences
Discrimination only works if the cheap version cannot be taken by customers who would have paid full price. The barriers that prevent that are fences.
An advance purchase requirement fences leisure travellers from business travellers, since only one of them knows their schedule weeks ahead. A student identification requirement fences by verified status. A usage cap fences light users from heavy ones.
Good fences correlate with willingness to pay and are costly to fake. A fence that is easy to circumvent collapses the whole structure to the lowest price.
Deliberately Worse Versions
The most counterintuitive form is degrading a product to protect the price of the better one.
Companies have shipped hardware that was identical to the premium version with features disabled, at real cost to themselves, because a cheap version that was too good would cannibalise the expensive one. The economics of manufacturing one line and disabling features beat producing two.
This is why a cheaper tier is often not the product minus the expensive parts, but the product with something specifically removed that high value customers need.
Where It Requires Care
Three conditions have to hold. The seller needs some pricing power, since a commodity with identical substitutes cannot sustain different prices. Buyers must be separable by some observable or self selected signal. And resale has to be difficult, because if the cheap buyers can sell to the expensive ones, they become the seller.
Resale is why the practice is far more common in services and software, which cannot be transferred, than in physical goods that can be shipped to a higher priced market.
There are also limits that are not economic. Charging different prices based on certain protected characteristics is unlawful in many jurisdictions, and personalised pricing that customers perceive as exploiting them has repeatedly produced backlash severe enough to reverse the policy.
Reading a Pricing Page
Once the mechanism is visible, a pricing page becomes a map of how the company segments its market. The features held back from the cheap tier reveal who they think the valuable customers are and what those customers cannot do without.
A tier structure where the jump to enterprise is gated on security, compliance or administrative controls is telling you the company believes large organisations pay for governance, not for the core product.
The Bottom Line
Price discrimination captures value that a single price forfeits at both ends of the demand curve, and most pricing structures are implementations of it. Second degree self selection dominates because it needs no information about the buyer, and the whole structure depends on fences that are costly to circumvent. Read a tier list backwards and it tells you exactly which customers the company thinks will pay.