# Free shipping bar with pack upgrade button in cart: +24% RPV

- Outcome: Won
- Page type: Cart (Ecommerce)
- Elements: Cart drawers & slide carts, Free shipping thresholds & shipping price, Upsells & cross-sells
- Test run by: [Convertibles](https://liftarchive.com/practitioners/convertibles/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://convertibles.dev/blogs/case-studies/free-shipping-progress-bar-tier-upgrade-case-study
- Page: https://liftarchive.com/test/food-brand-cart-free-shipping-pack-upgrade/

Adding a free shipping progress bar with one-click 10-pack and 15-pack upgrade buttons to the cart drawer lifted revenue per visitor by 24% among shoppers who opened the cart. Convertibles ran this test for a DTC food brand sold in packs and published it as a Convertibles case study. The result reached an 88% probability to beat control on 119 vs 94 orders, so treat it as directional.

## Result

**+24% RPV**

- Revenue per visitor: +24% for shoppers who opened the cart drawer, at 88% probability to beat control.
- Orders: 119 in the winning version vs 94 in control, a small sample.
- Earlier reads favoured a plain progress bar version, at +53% on day 39 and +32% on day 46, before the upgrade version finished first.
- The lift shrank as more orders came in, so the true effect may be smaller than 24%.

## Control

The cart drawer showed cart items, a checkout button and a View cart link. It said nothing about free shipping or the pack discounts that start at 10 and 15 items.

## Variant

A card at the top of the drawer held a free shipping progress bar with markers for the 10-pack and 15-pack discounts, a headline that changed as each unlocked, and an "Upgrade to 10-Pack" or "Upgrade to 15-Pack" button. The View cart link was removed.

## Why it likely won (our reading)

- Shoppers did not remember the pack rules from the product page, so showing them in the drawer made the offer visible at the right moment.
- A button that raises the quantity for the shopper is easier than working out how many items to add.
- Some form of progress bar led control at every read, which suggests the message itself helped.

## Caveats

Measured only on shoppers who opened the cart drawer, at 88% probability rather than 95%, on about 100 orders per version. The lift shrank from earlier reads.

## How to run this test

- Hypothesis: If we show a free shipping progress bar with a one-click upgrade to the next discounted pack in the cart drawer, then revenue per visitor will rise because shoppers see how close they are to a reward and can reach it in one tap.
- Primary metric: Revenue per visitor among cart openers
- Guardrail: Checkout start rate
- Guardrail: Conversion rate
- Guardrail: Margin per order after shipping and pack discounts
- Who should test it: Stores where free shipping or a discount starts at a set quantity or spend, such as food, supplements or consumables sold in packs. If you have no threshold, or most carts already qualify, there is little for the bar to do.

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Credit: Convertibles ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/food-brand-cart-free-shipping-pack-upgrade/).
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.