Your Shipping Threshold Is a Bidding Signal
You set free shipping at £50. You know this changes customer behaviour - people add items to hit the threshold. But does your Google Ads account know?
Almost certainly not. Your agency manages bidding in one silo and your shipping policy sits in another. The two never speak to each other.
How shipping thresholds distort performance
- Products priced just below the threshold drive higher AOV - but also higher return rates, because the add-on item was never really wanted
- Products priced above the threshold convert differently - the shipping cost is already "free," so the friction profile changes
- Changes to the threshold (e.g., raising it from £40 to £60) change conversion rates overnight - but your bid strategy doesn't know why performance shifted
The commercial disconnect
Your shipping threshold is a commercial lever that affects every Google Ads metric downstream. It changes CPA, conversion rate, AOV, and margin simultaneously. Yet most agencies treat it as a site-side decision that's not their concern.
It should be a bidding input. Products that benefit from the threshold should be bid differently. Products that suffer from it should be segmented. And when the threshold changes, the bid strategy should change with it - not two weeks later when the agency notices the performance dip.
The fix is integration
Your ads, your pricing, and your shipping policy are not separate strategies. They're three parts of the same conversion equation. Any agency that manages your bids without understanding your shipping economics is optimising with one eye closed.