# Testing two free-shipping thresholds on a classic Shopify theme

Asked by Louise Perrin on 2024-09-11. Tags: shopify, liquid, ab-testing, playbooks.

I manage a kitchenware store on a regular Shopify theme, nothing headless. We do
about 60% of revenue in Q4 and I want to test a free-shipping banner at two
thresholds, 49 and 75, before committing the margin for the season.

We already have Google Tag Manager on the store from our analytics setup.

My worry is the maintenance. If we pick a threshold and later want to change teh
copy or the number, does that mean theme work every time? I have one developer
day a month, roughly, so I need to know how much of this needs a dev

## 2 answers

### Answer from tomw (2024-09-11)

For a Liquid theme the path is the JS SDK plus the Croct tag in the GTM
container you already have, so the initial install does not even touch the
theme code.

The developer part is a one-time job: create a slot for the banner and render
its content in the theme where the banner lives. That is your one dev day.

After the banner slot exists, everything you described is dashboard work.
The two thresholds become two variants in an A/B test, and when you want to
change the copy or the number later, that is a content change you publish
yourself. Marketers publish and pause without code, so your dev is out of the
loop for the whole test-and-iterate cycle.

#### Reply from Louise Perrin (2024-09-12)

One dev day for the slot is doable. Good to know the threshold changes
stay on my side after that.

### Answer from Hannah Kimura (2024-09-13)

Adding a data point since you are weighing the margin commitment: the ISZI
free-shipping playbook is the same pattern you are describing, threshold nudge
in a banner slot, and it produced +39% conversion for them. Obviously your
numbers will differ, but it is a sane test to run before Q4.

One practical tip: make the conversion goal an order event rather than banner
clicks, otherwise the higher threshold can look like it wins on engagement
while losing on actual orders.