# Post-purchase upsell offer: $5,282 extra revenue in week one

- Outcome: Won
- Page type: Post-purchase (Ecommerce)
- Elements: Upsells & cross-sells
- Test run by: [Vasta](https://liftarchive.com/practitioners/vasta/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://vasta.me/cro-special-articles/smart-upsell-funnel-adds-100k-in-monthly-sales
- Page: https://liftarchive.com/test/vasta-post-purchase-upsell-test/

Showing a post-purchase upsell to a subset of buyers brought in $5,282.64 of extra revenue in its first week. Vasta ran this test for an unnamed Shopify store. The agency reports a monthly contribution of $163,422, but the offer and test setup were not described.

## Result

**$5,282 extra revenue in week one**

- Extra revenue: $5,282.64 in the first week, with only part of the traffic exposed.
- Reported monthly contribution: $163,422, which appears to be a projection rather than a measured month.
- No conversion rate, take rate or confidence level was shared.

## Control

Buyers finished checkout with no upsell offer after purchase.

## Variant

A post-purchase upsell offer was shown to a subset of buyers after they paid. The product and discount offered were not described.

## Why it likely won (our reading)

- A post-purchase offer comes after payment, so it can't cost the first sale.
- Buyers who just paid are already in a buying mood and their payment details are saved.
- Even a small take rate adds revenue on top of orders the store already had.

## Caveats

Very little detail was shared: no description of the offer, sample size or confidence. The monthly figure looks extrapolated from a short test.

## How to run this test

- Hypothesis: If we show a relevant one-click offer after purchase, then revenue per order will rise because buyers can add an item without re-entering payment details.
- Primary metric: Revenue per order
- Guardrail: Upsell take rate
- Guardrail: Refund and cancellation rate
- Guardrail: Customer complaints
- Who should test it: Stores with consumables or natural add-ons to the main product. It fits less well when products are one-off, high-ticket purchases with no obvious companion item.

---

Credit: Vasta ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/vasta-post-purchase-upsell-test/).
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.