Free shipping note below add to cart: no clear change (-0.2%)
Test run byClean CommitCRO agency
Commentary byLiftArchiveOur analysis, not theirsPlacing a short free shipping threshold note directly below the add-to-cart button made no clear difference: conversion rate moved -0.2% across 76,500 visitors.
Clean Commit ran this test for an anonymized Shopify store and published it in its A/B test library.
With 99% statistical power, the test was big enough to find a meaningful effect, and it didn't.
- Conversion rate: -0.2%. Flat: no clear difference.
- Revenue per visitor: +3.7%, on a 3.9% higher average order value, but within normal variation.
- Add-to-cart rate: +1.1%, and orders +0.2%.
- Devices split: desktop conversion rate +4.7%, mobile -1.6%, neither clear.
The change
The variant adds a free shipping note and stock note under add to cart.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The product page had no shipping note directly under the add-to-cart button.
Variant
A short free shipping threshold message sat right below add to cart, styled to match nearby text. The 'In stock, ready to ship' note moved as well.
Why it likely came out this way
Our reading of the result, not the practitioner's claim.
- Shoppers may already have known the free shipping threshold from elsewhere on the site, such as an announcement bar.
- A note styled to match nearby text is easy to read past.
- The threshold may nudge some shoppers to add more, which fits the small rise in order value, without changing whether they buy.
Caveats: 76,500 visitors with 99% statistical power, so a flat result here is informative. Test duration was not shared, and the in-stock note moved at the same time.
Who ran it
Clean Commit ran this test for a Shopify store (anonymized) and published the results (Clean Commit A/B test library). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on Clean Commit →
How to run this test on your store
- Hypothesis
- If we show the free shipping threshold right below add to cart, then more shoppers will buy because they know the shipping cost at the moment they decide.
- Primary metric
- Conversion rate
- Guardrails
- Average order value
- Mobile conversion rate
- Who should test it
- Stores whose free shipping offer is not shown anywhere else on the product page. If it is already in an announcement bar or near the price, moving it is unlikely to matter much.
Questions
Where should I show free shipping on a product page?
Near the add-to-cart button is a common choice, but in this test it made no clear difference. Test it against your current placement.
Does a free shipping threshold raise order value?
Order value rose 3.9% here, but within normal variation.
A threshold set just above your typical order is more likely to help.
Why would desktop and mobile react differently?
Layouts differ by device, so a note can be prominent on desktop and crowded on mobile. Check results by device before you decide.
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