Redbrain drives sales growth for eBay with lower-priced product strategy
Redbrain partnered with eBay and Google Ads to drive growth for eBay, through a lower priced product strategy.
Key Takeaways
The Highlights
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The Challenge
As one of eBay’s longest-standing partners since the launch of CSS in 2017, Redbrain has contributed significantly to their CSS success. However, by 2024, the Shopping Ads landscape had become increasingly crowded and competitive. The challenge was how to efficiently attract new customers and re-engage dormant ones while maintaining sustainable growth and ROI. Rising auction pressure and aggressive bidding strategies made visibility more difficult. eBay needed a more agile and differentiated approach to drive incremental performance.
A core part of the evolving strategy focused on lower-priced products. These items serve as a natural entry point for new customers, who are more likely to make an initial purchase if the price is affordable. To support this approach, eBay offered enhanced incentives to partners like Redbrain to promote them more actively. This contributed to stronger visibility in lower-price categories and helped expand reach to price-conscious shoppers.
The Approach
Campaign Restructure
Focus on promoting lower-priced, high-conversion items
Dual-CSS Strategy
Redbrain deployed a dual-CSS strategy in the UK, setting up a second Comparison Shopping Service
Leveraged Google Tools
Redbrain leveraged advanced Google Tools to support efforts
eBay partnered with Redbrain to restructure campaigns and focus on promoting lower-priced, high-conversion items. Redbrain deployed a dual-CSS strategy in the UK, setting up a second Comparison Shopping Service to expand reach and segment campaign types more effectively. This allowed for greater coverage, more tailored bidding strategies, and access to untapped product categories.
To support these efforts, Redbrain leveraged several advanced Google tools:
- Google CSS for improved visibility in Shopping placements.
- tROAS (target Return on Ad Spend) bidding, applied selectively to optimise where automation aligned with campaign and performance goals.
- Multi-seller Merchant Center setup, allowing Redbrain to support multiple eBay sellers within a single structure.
Partnering with Redbrain:
Redbrain operates on a risk-free cost-per-sale model, meaning eBay only pays when a purchase occurs. Redbrain supported eBay’s efforts to scale Shopping Ads in the UK and Germany. The second CSS setup in the UK helped unlock new verticals and buyer segments, without duplicating existing internal efforts. These tests helped isolate the effect of Redbrain’s activity on new customer acquisition and sales, ensuring performance was additive and not duplicative.
The Results
The Results
+62%
eBay Sales Value, UK
+84%
eBay Sales Value, Germany
2x
Comparison Shopping Services
This collaboration supported meaningful results. YOY GMV rose by +11% in 2024, with the UK and Germany leading growth through ASP boosting. Notably, Q1 2025 GMV surged +54% YoY, with the UK CSS growing +62% and Germany +84%. These results were supported by the expanded CSS infrastructure, improved campaign granularity, and refined targeting capabilities.
Incrementality testing confirmed that campaign growth was net new, rather than overlapping with other internal efforts.
Testimonials
Customer Testimonial
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Partner Perspective
Actionable recommendations
About the Author
James leads strategic development for Redbrain’s marketplace clients, where he helps shape growth strategies, and explore new ways to generate revenue.
