# 'People also bought' upsells in cart drawer: +$33,072/month

- Outcome: Won
- Page type: Cart (Ecommerce)
- Elements: Cart drawers & slide carts, Upsells & cross-sells, Trust badges & security seals
- Test run by: [Convertibles](https://liftarchive.com/practitioners/convertibles/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://convertibles.dev/blogs/case-studies/cart-drawer-upsells-vs-trust-badges-case-study
- Page: https://liftarchive.com/test/dog-treats-cart-drawer-upsells-vs-trust/

Adding a 'People also bought' row of two complementary treats to the cart drawer, with a cleaner layout and no discount code field, added a reported $33,072 a month. Convertibles ran this test for an 8-figure dog treats brand. Adding a review badge or brand value icons on top did not improve on it.

## Result

**+$33,072/month**

- Revenue: +$33,072 a month for the upsell-only drawer, as reported by the agency.
- Adding a review-count badge below checkout did not beat upsells alone.
- Adding four brand value icons, such as all-natural and family owned, did not beat it either.
- Removing the discount code field on its own made no clear difference.

## Control

The drawer had a free shipping progress bar, the subscription product card with its savings, a discount code field and a checkout button showing the total. There were no upsells.

## Variant

The brand logo at the top, a cleaner product card with a savings badge, no code field, and a 'People also bought' row with two treats and Add buttons.

## Why it likely won (our reading)

- The control had no upsells at all, so two related treats gave shoppers an easy way to add to the order.
- Shoppers buying dog treats from this brand likely already trusted it, so trust badges told them nothing new.
- The upsells were priced below the cart total, so adding one felt like a small step.

## Caveats

The winner combined upsells with a logo, a cleaner card and no code field. No sample size, duration or confidence level was published.

## How to run this test

- Hypothesis: If we add two complementary 'People also bought' products to the cart drawer, then revenue per visitor will rise because shoppers can easily add related items before checkout.
- Primary metric: Revenue per visitor among shoppers who open the cart
- Guardrail: Conversion rate
- Guardrail: Average order value
- Guardrail: Upsell take rate
- Who should test it: Stores with low-priced, repeat-purchase products that pair naturally, and a cart drawer with no upsells yet. For high-ticket, considered purchases, a cross-sell near checkout can cost orders, as a premium bag brand found.

---

Credit: Convertibles ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/dog-treats-cart-drawer-upsells-vs-trust/).
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.