Scarcity

Limited availability raises perceived value and desire.

Where it applies

Three of the eight page areas.

How to use it

Four ways to use it, and one to avoid.

  • Show real low-stock indicators, such as “only 3 left in your size”.
  • Show units-sold or share-claimed counters on genuine limited deals.
  • Offer limited editions and limited runs.
  • Use demand-based messages, such as “selling fast”, for practical goods and limited supply for experiences.
  • Avoid: stock or demand messages that aren’t true, as inaccurate availability information can be a banned practice under the DMCC Act 2024.
What the research found

Scarcity cues raise purchase intentions, and the best cue depends on the product.

A 10% rise in units already claimed led to 2.08% more basket adds in the next hour.

Meta-analysis of 416 effect sizes from 131 studies: scarcity cues raise purchase intentions, with demand-based cues best for utilitarian products, supply-based for experiences and time-based for high-involvement products. In Amazon lightning-deal field experiments, a 10% rise in units already claimed led to 2.08% more basket adds in the next hour.

Key research

Four sources, each checked.

Last reviewed

Before you use it · UK law

Stock and demand messages must be true: giving inaccurate availability information to push a sale can be a banned practice under the DMCC Act 2024. The CMA acted against Wowcher (2024) and Emma Sleep over false 'high demand' and urgency claims, and can now fine up to 10% of global turnover directly.

This is simply a pointer to check, not legal advice. Seek legal advice before you put this principle into action.