Accessory cross-sells in cart and checkout: five figures more a month
Test run bySplitBaseCRO agency
Commentary byLiftArchiveOur analysis, not theirsAdding accessory and bundle cross-sells to the cart and checkout brought Moon Pod an extra five figures in revenue per month.
SplitBase ran these tests for Moon Pod, a bean bag chair brand, and kept refining which products were paired and when the offers appeared.
- Revenue: up by five figures per month, according to SplitBase. No exact figure was shared.
- SplitBase says the lift showed up almost right away after launch.
- The figure comes from several cross-sell experiments, not one single test, so no one version gets all the credit.
The change
The variant adds accessory and bundle cross-sells to the cart.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
The cart and checkout showed only the items the shopper had chosen. There were no offers for accessories or bundles.
Variant
Cross-sells for Moon Pod accessories and bundles appeared in the cart and checkout. Later tests changed the product pairings and the rules for when each offer showed.
Why it likely won
Our reading of the result, not the practitioner's claim.
- Moon Pod sells several accessories that go with the main chair, so there was a natural add-on for most orders.
- The cart is where shoppers have already decided to buy, so a small extra item is an easy yes.
- Tuning the pairings and display rules likely kept the offers relevant instead of random.
Caveats: The result is given only as five figures per month and covers several experiments, with no sample size, duration or confidence shared. The case study's larger headline revenue number covers the whole program, not just these cross-sells.
Who ran it
SplitBase ran this test for Moon Pod and published the results (SplitBase case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on SplitBase →
How to run this test on your store
- Hypothesis
- If we show relevant accessories and bundles in the cart and checkout, then average order value and revenue per visitor will rise because buyers who have already committed are open to a useful add-on.
- Primary metric
- Revenue per visitor
- Guardrails
- Checkout completion rate
- Average order value
- Return rate on add-on items
- Who should test it
- Stores with a hero product and clear accessories or refills that go with it. It probably won't help if you sell single items with no natural add-on, or if the cart is already crowded.
Questions
Should cross-sells go in the cart or on the product page?
Both can work. The cart catches shoppers who have already decided, while the product page can sell bundles before the choice is made.
Test them separately so you know which placement earns the lift.
Do cart cross-sells hurt conversion rate?
They can if they distract people from checking out.
Watch checkout completion alongside revenue, and keep the offer small and relevant.
What should I cross-sell?
Start with items people already buy together, based on your order data.
Moon Pod's team used existing purchase patterns to build new bundles.
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