AmesClick-to-reveal pricing leads buyers to underestimate costs.
Iowa State researcher Minzhe Xu found the effect holds across multiple retailers, the Journal of Consumer Research reports.
No disclosure rule yet governs delayed-pricing design.
Sources: Phys.org
THE MECHANISM
When a price is hidden behind a click, the brain doesn't wait — it anchors on whatever cue is available: the product image, a competitor's price, a prior expectation. By the time the real price appears, the shopper is comparing it to their own optimistic guess, not to the market.
WHY RETAILERS DO IT
Showing a high price upfront triggers an immediate exit on price-comparison sites and search-aggregator listings. A click-to-reveal flow defers that decision until after the shopper has invested attention — sunk cost in seconds, but real. Conversion rates rise even when the final price doesn't change.
THE LEGAL VACUUM
The FTC polices deceptive pricing — bait-and-switch, hidden fees at checkout, fake reference prices — but click-to-reveal sits in a gray zone because the real price *is* shown before purchase. The EU's 2024 Digital Services Act flags dark patterns more aggressively than US law, but enforcement is still nascent.
THE BROADER PATTERN
Click-to-reveal joins a family of attention-tax designs: drip pricing (fees added stage by stage), reference-price inflation ("was $200, now $99" when nothing was ever $200), and forced account creation before price disclosure. Each exploits a different cognitive shortcut; together they form what regulators now call dark patterns.
WHAT THE STUDY ACTUALLY MEASURED
Xu's work in the Journal of Consumer Research tested the effect across multiple product categories and retailers, isolating the timing of price disclosure as the causal variable. The replication across retailers matters — it rules out a single platform's UX as the explanation.