What the decoy effect actually does to a pricing page

The short version

The decoy effect, known in research as asymmetric dominance, describes what happens when you add an option that is clearly worse than one of your existing options but not clearly worse than the other. The new option is rarely chosen. Its job is to make one of the others look obviously good.

Picture two plans: Basic at $12 with three seats, and Team at $30 with ten seats. Many buyers will hesitate. Now add Plus at $28 with five seats. Hardly anyone buys Plus, but next to it Team suddenly looks like a bargain, and more people choose it.

Why it works

People rarely judge a price in absolute terms. They judge it against whatever is nearby. The decoy gives the buyer an easy comparison, one where the target plan wins on every dimension, and easy comparisons feel like good decisions. It reduces the effort of choosing as much as it changes the choice.

When it backfires

Decoys work best when buyers compare plans quickly on one or two dimensions. They work less well, and can do harm, when the buyer is careful, technical or already suspicious. An obviously pointless plan reads as manipulation to a procurement team, and a pricing page that feels like a trick costs more trust than a few upgrades are worth.

They also age badly. When the product changes and nobody updates the decoy, it can drift into being a reasonable option, and then it simply splits your buyers.

How to test one

Run the three-plan page against your current page, with the same traffic split, for at least two billing decisions’ worth of visitors. Watch plan mix, revenue per visitor and refund or downgrade rates in the following month. A decoy that lifts upgrades but also lifts regret has not worked.