Best Sellers section on product page: +5.64% revenue per visitor
Test run byDave DiederenSyntra Labs
Commentary byLiftArchiveOur analysis, not theirsAdding a Best Sellers section to the bottom of the product page raised revenue per visitor by 5.64% and conversion rate by 6.20%. Dave Diederen ran this test over three weeks with about 185,000 visitors. The dashboard put the gain at roughly A$40,700 a month, or about A$488,000 a year.
- Profit per visitor (primary metric): +5.70%, A$1.62 to A$1.71, an estimated A$24,877 a month.
- Revenue per visitor: +5.64%, A$2.68 to A$2.83, an estimated A$40,683 a month.
- Conversion rate: 1.74% to 1.85%, a 6.20% relative lift, with a 95.9% probability of beating control.
- Average order value showed no change (A$153.96 vs A$153.14). The gain came from more people buying, not bigger baskets.
The change
A Best Sellers row was added just above the footer.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The product page ended without a best sellers row, so shoppers who weren't sold on the product had no obvious next step.
Variant
A Best Sellers section of product cards was added at the bottom of the product page. No app was used.
Why it likely won
Our reading of the result, not the practitioner's claim.
- shoppers who scroll to the bottom are still interested but not convinced. A row of other options gives them a reason to stay instead of leaving.
- best sellers carry built-in social proof, so they are a safe second choice for an undecided browser.
- the section sits below the main buying area, so it adds an option without distracting people who were already going to buy.
Caveats: This was one store, run from February 18 to March 11, 2026 with 184,620 visitors. The conversion confidence range ran from -1% to +13%, so the true lift could be smaller.
Who ran it
Dave Diederen (@DaveDiederen) shared this test on X. The numbers and screenshots are theirs.
View the original post on X
How to run this test on your store
- Hypothesis
- If we add a Best Sellers section to the bottom of the product page, then more visitors will buy because undecided shoppers get proven alternatives instead of leaving.
- Primary metric
- Revenue per visitor
- Guardrails
- Average order value
- Conversion rate on the original product
- Profit per visitor
- Who should test it
- Stores with a wide catalogue where shoppers compare styles, such as fashion or furniture. It is less likely to help single-product stores or pages where the alternatives are near-identical.
Questions
Where should a best sellers section go on a product page?
In this test it sat at the bottom of the page, above the footer. That catches shoppers who scrolled past the main product without buying.
Does a best sellers section lower sales of the main product?
Average order value did not change here and overall conversion rose 6.20%. Track sales of the main product as a guardrail when you test it.
Do I need an app to add a best sellers section?
Dave Diederen said no app was used here. Most themes can show a collection as a product row.
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