Bulky Item Delivery Economics in Google Ads
That garden furniture sale to the Scottish Highlands looks great in Google Ads. But when delivery costs £95 instead of £25, your 4x ROAS becomes a loss. Here's how to build geographic profitability into your bidding.
The Bulky Delivery Challenge
Garden furniture, outdoor buildings, and large outdoor products face a unique advertising challenge: delivery costs that vary dramatically by location.
Illustrative Delivery Cost Variation
- Mainland UK (zones 1-2): £25-45 for large items
- Outer regions (zone 3): £45-75
- Scotland Highlands (zone 4): £75-120
- Islands (zone 5): £100-200+
- Northern Ireland: Often excluded or premium pricing
Google Ads doesn't know about these costs. It optimises for conversion value, which is the same £599 regardless of whether you ship to London or Lewis.
These figures illustrate the mechanism only. Use your own carrier invoices, surcharges and delivery income before changing bids.
Delivery Margin Reality
The impact on actual profitability is stark:
£599 Garden Set to Manchester
Product margin: £180 | Delivery cost: £35 | Net margin: £145
£599 Garden Set to Aberdeen
Product margin: £180 | Delivery cost: £85 | Net margin: £95
£599 Garden Set to Shetland
Product margin: £180 | Delivery cost: £180 | Net margin: £0
Worked example only, not a client result or a benchmark.
Same product, same advertised price, same ROAS in Google Ads. Completely different profitability. If you charge customers the same delivery fee regardless of location, this is absorbed margin eating your profit.
Geographic Commercial Controls
The available control depends on campaign type and bidding strategy. Smart Bidding already uses location among its auction-time signals, so a manual location modifier is not a universal override. Manual bid adjustments should only be considered where the selected campaign and bidding strategy support them.
- Location reporting: Compare delivered contribution by region before deciding whether the difference is material
- Exclusion zones: Consider excluding areas where delivery economics are unworkable
- Campaign boundaries: Separate regions only where the commercial difference and available conversion volume justify distinct budgets or targets
- Value design: Review whether the conversion value reflects delivered economics, without assuming that location alone determines contribution
Google Ads documents bid-adjustment eligibility by campaign and bidding strategy. The right treatment depends on actual delivered contribution, conversion volume and the controls supported by the live campaign.
Feed Optimisation
Your Shopping feed should reflect delivery complexity:
- Shipping weight: Accurate weights help Google estimate delivery costs
- Shipping settings: Use Merchant Center shipping tables that reflect actual zone-based pricing
- Custom labels: Segment products by delivery complexity (standard, pallet, specialist)
- Product dimensions: Include for accurate freight quoting
Accurate shipping data in your feed improves the Shopping experience and reduces cart abandonment from unexpected delivery charges.
This work sits inside our Google Shopping management, where product eligibility, feed data and campaign decisions are reviewed together.
Campaign Structure
Campaign structure can create geographic control where a material commercial difference justifies it. It should not be split solely to force a manual modifier into Smart Bidding.
For some accounts, exclusions or delivery pricing solve the problem. For others, a separate regional budget or target is warranted. The evidence should come from fulfilled-order economics rather than a generic postcode recipe.
True Profit Measurement
Standard ROAS doesn't capture delivery economics. Build better measurement:
- Net margin tracking: Calculate profit after COGS and delivery per order
- Geographic POAS: Profit on ad spend by region
- Delivery cost analysis: Regular review of actual delivery costs by postcode
- Customer lifetime value by region: Rural customers may have lower repeat rates due to delivery friction
Illustrative POAS Calculation
Revenue: £10,000 | Ad Spend: £2,500 | ROAS: 4x
COGS: £4,000 | Delivery: £1,500 | Gross Margin: £4,500
POAS: £4,500 / £2,500 = 1.8x → £0.80 profit per £1 ad spend
The Bottom Line
Bulky item delivery costs can invert the profitability picture that Google Ads shows. Measure delivered contribution by region, then choose controls that the campaign type and bidding strategy actually support. The decision may involve targeting, exclusions, budgets, targets, delivery pricing or conversion-value design, rather than a universal location bid modifier.