Subtle 'X left' stock line below the CTA: +22% conversion rate
Test run byVisuallyTesting and CRO tool
Commentary byLiftArchiveOur analysis, not theirsA subtle low-stock line below the add-to-cart button, showing how many units were left, lifted conversion rate by 22% on bestseller pages.
Visually ran this test with London womenswear brand Odd Muse and published it as a case study.
A more aggressive urgency version was tried first and did poorly, so the team toned it down to suit a premium brand.
- Conversion rate: +22% for the subtle stock line on bestseller pages.
- An earlier, more aggressive urgency version performed poorly. Its numbers were not given.
- Sample size, test length and confidence were not shared.
The change
A small 'X left' line appears just below the add-to-cart button.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
Bestseller product pages showed no stock messaging.
Variant
A small, factual line below the add-to-cart button showed how many units were left.
Why it likely won
Our reading of the result, not the practitioner's claim.
- A factual count gives a real reason to buy now without feeling pushy.
- Loud urgency can feel cheap on a premium brand. A quiet line fits the tone.
- Placing it right below the button puts it where the decision is made.
Caveats: The earlier aggressive version's results were not shared. Reported in a vendor case study without sample size, duration or significance.
Who ran it
Visually ran this test for Odd Muse and published the results (Visually case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on Visually →
How to run this test on your store
- Hypothesis
- If we show a quiet, factual low-stock count below the add-to-cart button, then more shoppers will buy because they see a true reason not to wait.
- Primary metric
- Product page conversion rate
- Guardrails
- Return rate
- Repeat visit rate
- Conversion on pages without low stock
- Who should test it
- Premium or fashion brands with limited stock on popular items. Only show real stock counts; fake scarcity damages trust and may break consumer law.
Questions
Do low-stock messages work for luxury brands?
They can if they stay factual and quiet.
Odd Muse found a bold urgency version did poorly, while a subtle stock count lifted conversion by 22%.
Where should a low-stock message go?
Close to the add-to-cart button, where the shopper decides.
Odd Muse placed it directly below the button.
Is it OK to show fake scarcity?
No. Show only real stock levels. Fake counts erode trust and can break consumer protection rules.
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