Amazon PPC Case Study: Reduced ACOS by 24% While Increasing Sales & Lowering Ad Spend

Overview

Many Amazon sellers assume that increasing ad spend is the only way to scale sales. In reality, strategic Amazon PPC optimization can increase revenue while reducing advertising costs.

This case study highlights how a structured, data-driven approach improved efficiency and profitability without aggressive budget increases.

The Challenge: High ACOS Impacting Profitability

The account was already generating solid sales, but advertising efficiency was a concern.

Before Optimization (Feb 15 – Feb 21)

• Sales: €22,456
• Ad Spend: €9,342
• ACOS: 41.6%

A high ACOS meant a significant portion of revenue was being consumed by ads, limiting overall profitability.

Strategy: Optimizing Amazon PPC for Efficiency

To improve performance, a focused PPC optimization strategy was implemented:

Search Term Mining

• Identified high-converting keywords
• Eliminated irrelevant and low-performing queries

Negative Keyword Strategy

• Reduced wasted ad spend
• Improved targeting precision

Bid Optimization

• Adjusted bids based on conversion data
• Prioritized high-performing keywords

Budget Allocation

• Redirected budget toward profitable campaigns
• Reduced spend on underperforming segments

Results: Lower Costs, Higher Revenue

After Optimization (Mar 1 – Mar 7)

• Sales: €24,497
• Ad Spend: €7,684
• ACOS: 31.37%

Key Improvements:

• ACOS reduced by 24%
• Ad spend decreased significantly
• Sales increased despite lower spend

Key Takeaway

Amazon PPC growth is not driven by higher budgets.

It comes from:

• Smarter keyword targeting
• Data-driven bid management
• Strategic budget allocation

When optimized correctly, PPC becomes both efficient and scalable.

Need Help Improving Amazon PPC Performance?

If your campaigns are generating sales but lacking efficiency, a structured optimization strategy can significantly improve profitability.