
Nudge “This common pricing strategy is completely wrong!” Robert Cialdini
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Jan 26, 2026 Robert Cialdini, social psychologist and author known for Influence, explains why common pricing habits fail and how precise numbers build credibility. He explores scarcity’s power through Prime, Disney vaults and cookie-jar studies. He also unpacks the authority principle and how perceived expertise changes behaviour.
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Prime Energy's Scarcity Boom And Bust
- Phill Agnew recounts Prime drink mania where undersupply caused long queues and inflated resale prices.
- Once Prime became widely available, demand and revenue collapsed dramatically.
Lead With Your Unique Offer
- Put what makes you unique at the top of your messaging to leverage scarcity effectively.
- Emphasize combinations of features rivals can't match to create believable uniqueness.
KFC Double Down's Limited-Time Strategy
- The Double Down burger succeeded by being both unique and only briefly available each year.
- KFC repeatedly reintroduces it to create recurring surges in sales and customer excitement.






