PPC CASE STUDY
AOS Online
www.aosonline.co.uk800%+ ROAS with positive margin.
Built a bespoke Profit on Ad Spend (POAS) system that turned paid advertising into a reliable, profitable growth engine for AOS Online.
- ROAS achieved
- 800%+
- Margin maintained
- Positive
- Performance Max campaigns
- PMAX
ROAS achieved
Margin maintained
Performance Max campaigns
About AOS Online
AOS Online is a UK e-commerce business operating in a competitive category. Like most e-commerce brands, paid advertising was a major growth lever — but also a major cost centre.
The challenge was familiar: scale spend without scaling losses. Track real profitability, not just topline ROAS.
The challenge
Standard ROAS metrics are misleading for e-commerce businesses with variable product margins. A 500% ROAS campaign selling high-margin products is profitable; the same campaign selling low-margin products might lose money. Most agencies don't separate these — they optimise to whatever the platform reports.
AOS Online needed a campaign management approach that optimised for actual profit on ad spend (POAS), not just revenue on ad spend (ROAS). That required building proper margin data into the campaign structure, then using that data to drive bidding and targeting decisions.
What we did
Built a custom POAS framework specifically for AOS Online's product mix, then ran their paid acquisition through it.
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POAS data architecture
Mapped product-level margin data into the campaign feed, so every conversion's true profit contribution was visible — not just its revenue.
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PMAX campaign management
Restructured their Performance Max campaigns to use POAS as the optimisation signal. Combined Google's automation with margin-aware targeting and asset groups built around the products that actually made money.
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Daily monitoring and adjustment
Active campaign management with daily performance review, budget reallocation, and bidding adjustments. PMAX rewards consistent input data and timely changes — it punishes "set and forget" management.
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Tracking that matched the model
Custom conversion tracking and reporting so the data feeding Google Ads matched the business reality — not just the default e-commerce pixel.
The results
The POAS framework consistently delivered ROAS over 800% — while maintaining positive margin across the campaign mix. Paid advertising went from cost to profit centre.
- 800%+
- Return on ad spend (ROAS)
- Positive
- Margin on ad spend (POAS)
Sustained over the engagement.
Validated against actual product margins, not just platform revenue figures.
RareBear has a good knowledge and understanding of what was required and completed all the required jobs quickly and successfully and would certainly use again.
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