The plan nobody buys is doing the selling

Here’s a puzzle from the days when The Economist sold subscriptions on a printed card. Web-only cost fifty-nine dollars. Print-only cost a hundred and twenty-five. And print-plus-web also cost a hundred and twenty-five — the same as print alone. Read it twice and the middle option looks absurd: who would ever pay the same for print alone as for print and web? Almost no one did. But when researchers removed that pointless middle option, more people chose the cheap web-only plan and fewer chose the expensive bundle. The plan nobody bought had been doing the selling.

This is the decoy effect, and it works because of something true about how brains judge worth: they mostly can’t, in the abstract. Is a hundred and twenty-five dollars a good price for a year of a magazine? You have no idea, and neither do I — there’s no internal ruler for it. So instead of judging in the abstract, the mind reaches for a comparison it can make. Give it two options where one plainly beats the other on every count, and it seizes that easy win with relief, and the relief drags the whole decision toward the winner. The decoy isn’t there to be chosen. It’s there to be beaten, in public, by the option you actually want to sell.

The technical name for the trick is asymmetric dominance, and the “asymmetric” is the whole engine. The decoy has to be worse than your target option on everything — same price for less, or more money for the same — while staying not-obviously-worse than the other real option in the set. That lopsidedness is what makes the target glow: next to a plan it clearly dominates, your target stops being an unknowable price and becomes, visibly, a deal. Print-plus-web wasn’t cheap in any absolute sense. It was cheap next to a decoy built precisely so that it couldn’t lose.

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It’s worth marking off what this is not, because a pricing page runs several of these effects at once. It isn’t anchoring — that’s the first, biggest number teaching your eye what “expensive” means before anything is compared. It isn’t the center-stage pull that makes the middle column of three feel like the safe default by its position alone. The decoy is doing something more specific: it changes the comparison set, adding a rung whose only job is to be a rung your target stands on.

For a builder that hands you a real and slightly dangerous lever. You can add a plan whose purpose is not to be bought but to reframe the plan beside it — and the difference between using this well and using it badly is exactly whether the reframe is true. A decoy that surfaces genuine value a user would otherwise have missed — showing that the annual plan really is a better deal than the monthly one they’d have defaulted to — is helping them see something real. A decoy engineered to make an overpriced plan merely feel like a deal, when it isn’t, is misdirection with a UI. The honest test is the one that keeps recurring on this site: if the user could see exactly what you were doing and why the decoy is on the page, would they feel helped or handled?

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Two things keep me from overselling this. First, the effect is real but not a law — it replicates in many settings and stubbornly fails in others, and its size depends on how comparable and how legible the options are. Treat it as a nudge that sometimes doesn’t fire, not a guaranteed conversion. Second, a decoy adds a row to your pricing page, and rows cost attention. A page cluttered with a phantom option that fools no one buys you nothing and taxes everyone. If you can’t build a decoy that reveals something true, the better move is fewer, clearer plans.