tiergain
6 A/B tests that lift Shopify AOV in 2026
Most stores guess which offers work. The ones testing pull 15-30% higher AOV with the same traffic.
$95
Average AOV with testing
28%
Lift from structured A/B tests
3.1x
ROI on testing vs guessing
You are making pricing and layout decisions based on gut feel. That is costing you 15-30% in missed AOV.
The hacks
A/B test free shipping threshold placement
Test a progress bar in the cart vs a static banner. Progress bars convert 18% more shoppers to hit the threshold. Position matters more than the number.
Test bundle tier thresholds, not just discounts
Most stores test discount percentages. Wrong variable. Test the tier thresholds instead. "Buy 3" vs "Buy 4" as the first tier changes behavior more than 10% vs 12% off.
Split test upsell timing on product pages
Immediate upsell popups get ignored. Test a 3-second delay after add-to-cart. Stores running this see 31% higher upsell acceptance because the primary decision is already made.
Test pricing anchor display on PDPs
Show "per-unit price" next to the bundle price. Test it against showing total savings in dollars. Per-unit framing wins for consumables. Dollar savings wins for durables.
A/B test post-purchase offer types
Complementary products convert at 6.2% post-purchase. Same-category items convert at 3.8%. Test both. Your catalog might be the exception.
Test cart page layout - single column vs grid
Single-column carts focus attention on checkout. Grid layouts expose cross-sells. Test both. Grid wins for stores with 50+ SKUs. Single column wins for curated catalogs under 20 SKUs.
Run one test at a time for 14 days
Overlapping tests contaminate results. Run one variable for 14 days with at least 1,000 sessions per variant. Anything less and you are reading noise, not signal.