# 'Complete the set' cross-sells: +€8.4K revenue during the test

- Outcome: Won
- Page type: Cart (Ecommerce)
- Elements: Upsells & cross-sells
- Test run by: [DRIP Agency](https://liftarchive.com/practitioners/drip-agency/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://dripagency.de/case-studies/snocks
- Page: https://liftarchive.com/test/drip-snocks-cart-complete-the-set-cross-sell/

Framing cross-sell recommendations around completing a set lifted revenue during the test from €167K to €176K (+€8.4K) for SNOCKS. DRIP Agency ran this A/B test on product pages and in the cart and published it in its SNOCKS case study. Several cross-sell approaches were tested, and this is the strongest reported result.

## Result

**+€8.4K revenue during the test**

- Revenue during the test: €167K to €176K, reported as a gain of about €8.4K (roughly 5%).
- Several variants were tested. The source reports the strongest, so the typical effect may be smaller.
- Order value and attach rate were not shared for this test.

## Control

Product pages and the cart showed the existing cross-sell recommendations.

## Variant

Recommendations were chosen and framed to help shoppers complete a set, rather than suggesting unrelated add-ons. DRIP also tuned how relevant the suggestions were and when they appeared.

## Why it likely won (our reading)

- A set feels finished. Suggesting the missing piece taps into a wish for completeness rather than a push to spend more.
- Relevant suggestions are easier to accept than random products, so more shoppers add them.
- Basics like socks and underwear are natural multi-item purchases, which suits set-based offers.

## Caveats

Several cross-sell variants were tested on product pages and in the cart, and the source reports the strongest one. Revenue is the total during the test runtime, not an annual figure. DRIP Agency did not publish sample size, test length or statistical significance.

## How to run this test

- Hypothesis: If we show cross-sells that complete the shopper's set instead of generic add-ons, then revenue per visitor will rise because the suggestion feels relevant and finishes the purchase.
- Primary metric: Revenue per visitor
- Guardrail: Cart-to-checkout rate
- Guardrail: Average order value
- Guardrail: Conversion rate
- Who should test it: Stores whose products naturally go together, such as apparel sets, matching home goods or kits. It is less likely to help single-purpose products with no clear companion item.

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Credit: DRIP Agency ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/drip-snocks-cart-complete-the-set-cross-sell/).
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.