The reason a decoy tier makes the middle look reasonable

A software company offers two plans: Basic at ten dollars and Premium at twenty-five. Customers split roughly evenly. The company adds a third plan — Enterprise at forty-five dollars — with only marginally more features than Premium. Almost nobody buys Enterprise, but Premium’s share jumps from fifty per cent to seventy. The new option was never meant to sell; it was meant to reframe.

What everyone sees

Buyers believe they are comparing features. The three columns look like three products aimed at three segments, and choosing the middle feels like a balanced decision — neither cheap nor extravagant. The Enterprise tier is dismissed as overkill, which feels like the buyer exercising judgement rather than following a script written by the pricing team.

What is actually happening

Huber, Payne and Puto identified the asymmetric dominance effect in 1982: adding an option that is clearly inferior to one existing option but not to another shifts preference toward the dominant one. The decoy does not need to attract buyers; it needs only to make the target option look better by comparison. Ariely and others replicated the effect in subscription pricing, conference registration and magazine bundles, finding that the decoy reliably steers choice even when respondents are told the mechanism exists.

Why it stays hidden

The decoy hides because it is present. A missing option would raise questions, but an available-but-unattractive option is simply bypassed, and bypassing it feels like the buyer’s own filtering at work. The decoy also conceals its function by being real: it can be purchased, it has a feature list, and it occupies the same visual space as the other tiers. Its purpose is architectural, but its appearance is commercial.