Adding a bundle promotion near the Add to Cart button aimed to boost average order value. See how this change impacted customer behavior and sales.
Boosting AOV with Collar and Sleeve Bundle Promotion on PDP


IF we promote a “Buy Collar, Get Off Sleeves” offer on the PDP THEN the average order value will increase BECAUSE customers feel like they're getting a bargain while making their product more unique, custom and desirable.
What We Changed
- Introduced a bundle promotion near the Add to Cart button.
- Added sleeve add-on option below size and variant selectors.
- Auto-applied discount when both items were in the cart.
- Displayed original price and discount clearly.
The Results
How the new version compared with the original, across all devices.
Change in amount of clicks
Click-through rate change
Average order value
Key Learnings
- The hypothesis was partially correct. AoV did increase, and more customers purchased the upsell.
- There was additional friction added and some users were confused by the offer, resulting in a drop in conversion rate.
- Recommendation: Run this exact experiment again with a redesigned upsell component that better explains the value.
- Declaring this test a winner because AoV and RPV increased.
Detailed results breakdown
Add-to-cart rate change
-2.9%
Average order value
+9.8%
Click-through rate change
+23.0%
Lift in conversion rate
-4.0%
Change in revenue per visitor
+0.6%
Start with 3 experiments.
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Get a taste of our service. We'll analyze your store, pinpoint low-hanging fruit, design, implement and test solutions to lift your conversion rate in 30 days.
Who qualifies?
30,000+ Monthly sessions.
Minimum traffic needed to run statistically significant tests.
Running on Shopify or Shopify Plus.
Our specialty - we don't work with other platforms.
Investing in paid traffic.
We work with stores committed to growth, not hobbyists.
Ready to invest in systematic CRO.
You understand testing takes time - no magic bullets.
Why free?
The best proof is results. Three real experiments show you exactly how we work and whether it drives revenue for your specific store. You keep everything - no strings attached.
Our bet
We're confident enough in our process to invest our time upfront. If the tests work, you'll see the value in continuing at $5,950/month. If not, you got free optimization work.
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Other experiments we've run

Homepage
Positive signal
Customer Photos on the Homepage Show a 3.3% Conversion Rate Lift
A block of customer-submitted photos and videos went onto the homepage, below the category carousel. See how it changed sales on mobile and desktop.
+3.3% Conversion rate

Search & Navigation
Loss Prevented
A More Prominent, Guided Search Cuts Conversion Rate 12.0%
The search bar became more visible and opened with examples, product previews, suggested collections and a customization banner. See how it affected orders and revenue.
-12.0% Conversion rate

Product Page (PDP)
Positive signal
Sticky Add-to-Cart Bar With Size Selector Shows a 9.6% Conversion Rate Lift on Mobile
Mobile product pages got a sticky add-to-cart bar with a size dropdown and a find-my-size link. See how it changed orders, add-to-cart and order value.
+9.6% Conversion rate
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