How Biostile Achieved +21% ROAS through Value-Based Bidding

Brand

Agency

Verticals

E-commerce & Retail

Geography

Slovenia

Google Ads Product

Search Ads Performance Max

About the Brand Biostile

Biostile is a premier European wellness brand specializing in high-quality dietary supplements and natural health solutions developed in collaboration with medical experts. The company emphasizes a holistic approach to vitality by combining traditional herbal wisdom with modern clinical research and proprietary manufacturing processes.

Challenge

The Challenge

Biostile hit a performance ceiling, but the real bottleneck wasn’t the market—it was the “Conversion Trap.”was the “Conversion Trap.” The existing conversion based bidding strategy prioritized the mere quantity quantity of sales over their actual value., This forced the campaigns to continuously chaseforcing the campaigns to chase low-ticket buyers while completely ignoring high-value growth opportunities. The company was stuck in a loop of diminishing returns where volume remainedwas high, but profitability was stalling.

To break the plateau, we had to define the exact financial gap between stagnant volume and scalable growth:

The Baseline (The Plateau): Campaigns were trapped at a baseline ROAS that sustained high volume but generated diminishing marginal returns, capping the brand’s ability to scale profitably.
The Target (Success Metric): A ROAS structure optimized for conversion value, engineered to automatically identify and acquire high-basket-value customers.

Key Objectives:

Quality over Quantity: Pivot from raw conversion volume to high-value revenue growth.
Strategic Scaling: Identify and push “hero products” with the highest profit potential.
Recalibrate ROAS: Redefine the bidding strategy to bridge the gap, outperforming saturated market limits and restoring profitability at scale.

Entrapment in the conversion trap

Prioritizing volume over sales value

Stagnating profitability despite high sales volume

Strategy

The Approach

To break through the plateau, GPartner, with the strategic support of Coob Ads, moved away from traditional volume-based tactics. The core solution was a transition to Value-Based Bidding (VBB) within a Target ROAS (tROAS) framework, shifting the focus from simple transaction counts to high-margin revenue.

However, re-training the AI required more than just flipping a switch in the account—it required feeding the algorithm higher-quality data infrastructure to fundamentally change how it learns.

Data-Driven Campaign Audit: A deep dive into historical performance data was conducted to identify high-potential campaigns. The goal was to pinpoint which product categories and audiences showed the strongest correlation between ad spend and high-value returns.
Transition to Target ROAS (tROAS): Guided by Coob Ads’s strategic recommendations, GPartner redefined the system’s mandate by switching to “Maximize Conversion Value.” This recalibration forced the AI to prioritize purchase size and real-time user value over raw volume.
First-Party Data Integration:To bypass low-value traffic, GPartner integrated first-party CRM data and enabled Enhanced Conversions. By feeding actual offline sales data directly back into the Google Ads infrastructure, the partnership provided the AI with the precise, real-time signals needed to optimize for authenticated, high-intent users.

Tools & Technologies

Google Analytics 4 Data-Driven Attribution Smart Bidding

Success

The Results

The strategic shift to Value-Based Bidding, developed through our close collaboration with GPartner, delivered immediate and measurable impact. Through a powerful synergy, combining GPartner’s agile execution with Coob Ads’s strategic insights, we successfully reshaped Biostile’s data infrastructure. By co-creating and implementing these advanced recommendations to prioritize high-value transactions, this partnership helped Biostile not only maintain their market presence but significantly amplify it. By implementing our recommendations for prioritizing high-value transactions, we helped Biostile not only maintain their market presence but significantly amplify it. The data confirms that our strategic guidance led to a powerful lift in efficiency and a superior quality of incoming traffic.

These results validate the effectiveness of the strategic roadmap we provided. By focusing the campaigns on higher-value conversions, the collaborative efforts of Coob Ads and GPartner enhanced Biostile’s overall product portfolio performance while maximizing bottom-line profitability.

+21.7%

ROAS

-20.8%

CPA

"GPartner’s exceptional execution, backed by Coob Ads’s strategic expertise, has been instrumental to our growth. This partnership enabled us to implement advanced strategies like value-based bidding, directly leading to higher profitability and ROAS. Together, they have provided the insights and performance needed to stay ahead of market trends."

Anej Sirk

Growth Marketing Partner, Biostile

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