# Sticky add-to-cart bar on desktop: +69% revenue per visitor

- Outcome: Won
- Page type: Product page (Ecommerce)
- Elements: Sticky add-to-cart bars
- Test run by: [Blend Commerce](https://liftarchive.com/practitioners/blend-commerce/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://blendcommerce.com/blogs/our-work/aeromotive-long-term-cro-performance-case-study
- Page: https://liftarchive.com/test/aeromotive-desktop-sticky-add-to-cart/

A sticky add-to-cart bar on desktop product pages lifted revenue per visitor by 69% for automotive parts brand Aeromotive. Blend Commerce ran this A/B test. Begin-checkout rate rose 4%, but conversion rate was not reported.

## Result

**+69% revenue per visitor**

- Revenue per visitor: +69%, the primary metric.
- Begin-checkout rate: +4%.
- Conversion rate and order value were not shared, so it is unclear whether the gain came from more orders or bigger ones.

## Control

On desktop product pages, the add-to-cart button scrolled out of view as shoppers read specs and fitment details.

## Variant

A sticky bar kept the add-to-cart button on screen on desktop, along with the product name and price.

## Why it likely won (our reading)

- Parts buyers scroll through long specs and fitment content. Keeping the button in view means no scrolling back up to buy.
- Showing the name and price in the bar reminds shoppers what they are buying at the moment they decide.
- A 69% revenue gain next to a 4% checkout gain suggests larger or pricier orders, but the data shared can't confirm that.

## Caveats

Sample size, test length and confidence were not shared. A 69% revenue-per-visitor lift is very large for a sticky bar, and revenue metrics swing with a few big orders, so treat the size of the gain with care.

## How to run this test

- Hypothesis: If we keep add to cart, product name and price visible in a sticky bar on desktop product pages, then revenue per visitor will rise because shoppers can buy at any point while reading long product details.
- Primary metric: Revenue per visitor
- Guardrail: Conversion rate
- Guardrail: Begin-checkout rate
- Guardrail: Return rate
- Who should test it: Stores with long, detailed product pages, such as technical parts, electronics or tools. On short pages where the button is always near the screen, the bar adds clutter and little else.

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Credit: Blend Commerce ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/aeromotive-desktop-sticky-add-to-cart/).
Usage: Free to use, quote and build on, with credit and a link: name the practitioner or organization that ran the test and link to its LiftArchive page. The results belong to the practitioners who ran and shared them; the summaries and commentary are LiftArchive's.