AOV Optimisation Is Ad Spend Optimisation

The AOV Illusion

Two brands. Same CPC. Same conversion rate. Same ROAS target. One makes money, the other doesn't.

The difference? Brand A has a £45 AOV. Brand B has a £85 AOV. Brand B can absorb a £12 CPA and still generate contribution profit. Brand A cannot. This is the same structural issue we explore in how Google Ads can turn £100 into £1 and still report success.

AOV determines how much you can afford to pay for a click. It sets the ceiling on your entire paid acquisition strategy.

Why AOV Matters for Ads

Google Ads charges per click, not per basket item. A click that generates a £120 order costs the same as one that generates a £35 order. The economics are radically different.

A £40 difference in AOV creates a 4x difference in contribution profit per order. That's not marginal. That's structural.

The Levers That Work

• • Bundle promotions in feed titles: "Complete Set" and "Starter Kit" language in product titles drives multi-item consideration - see our guide on feed attributes that actually matter
• • Cross-sell through campaign structure: Separate campaigns for accessories that are only shown to recent purchasers
• • Threshold-based free shipping: Setting free shipping at 1.3× your current AOV lifts basket value by 15-25%
• • Audience layering: Bid higher on audiences with historically higher AOV (repeat purchasers, email subscribers) - this is core to profit-based audience segmentation
• • Suppress low-AOV products: If a product consistently generates sub-£30 orders, it may not deserve paid traffic

Bidding Implications

If you know certain products or categories drive higher AOV, they can sustain higher CPCs. This isn't speculation - it's arithmetic. The same logic applies to why campaign consolidation is a risk when margin structures vary.

Segment your campaigns by AOV tier. Products with £100+ AOV get a different ROAS target than products with £30 AOV. Blending them together averages away the signal.

Smart Bidding can't see AOV variation unless you structure campaigns to make it visible. The algorithm optimises for conversion value, but it doesn't understand that a £100 order from a high-margin category is worth more than a £100 order from a low-margin one.

Measuring Real Impact

Track AOV by campaign, by product category, and by audience segment. Month-on-month AOV trends tell you whether your paid strategy is attracting better or worse baskets over time.

If AOV is falling while spend is rising, you're buying cheaper traffic that converts into smaller orders. That's a spiral, not a strategy. Be careful about data lag distorting your view of these trends.

Next Steps