108% increase in Amazon PPC sales with ACoS reduced to 14.21

Category: Industrial & Scientific (Hydraulic Components)

Brand overview 

Spare Parts Holland is a Dutch supplier of hydraulic components used in agricultural, industrial, and construction machinery. The company offers a growing catalog of more than 750 products, including pumps, valves, cylinders, and seals. 

With strong technical knowledge and a dedicated warehouse operation, they ship products daily to customers across Europe, the United States, Canada, and other international markets. As the brand expanded its presence on Amazon, the goal was to improve advertising efficiency while continuing to scale sales in the U.S. market.

The challenge

Although the brand already had steady sales, its Amazon advertising structure needed optimization to support sustainable growth. Campaign budgets were not always distributed toward the best-performing campaigns, which limited the overall return on ad spend.

At the same time, there was an opportunity to increase visibility through paid campaigns without increasing the advertising cost percentage. So, for the eStore Factory, the challenge is to scale sales while improving efficiency and controlling their ACoS.

Our solution

An Amazon marketing consultant of eStore Factory focused on improving campaign efficiency and scaling the campaigns that were already performing well.

• We reviewed the account performance and regularly adjusted bids and budgets to align spending with the most effective keywords and campaigns. 

• High-performing campaigns were allocated additional budget to capture more demand and increase conversions.

• We introduced negative keywords to eliminate irrelevant traffic and reduce wasted ad spend. This helped improve the overall campaign structure and ensured the advertising budget was focused on keywords that were more likely to convert.

These adjustments were implemented and monitored continuously with our Amazon seller analytical tool, SellerQI. It allows the campaigns to scale while maintaining better advertising efficiency.

Our results 

• Total sales increased from $51,090.87 to $61,206.96, generating nearly $10,000 additional revenue in just one month.

• PPC-driven sales grew from $17,848.98 to $37,139.92, more than doubling the revenue generated through advertising.

• Advertising efficiency improved significantly, with ACoS decreasing from 19.21% to 14.21% despite scaling campaigns.

• Ad spend increased from $3,429.36 to $5,277.90, but the improved campaign structure ensured the additional budget produced stronger returns.

The Spare Parts account Holland demonstrates efficient long-term advertising performance, where increasing ad investment translated into strong sales growth while maintaining a healthy ACoS. The consistent ROAS near 10x shows that campaigns were structured and optimized to generate profitable revenue over time.

These improvements were achieved through continuous bid and budget adjustments, allocating more budget to high-performing campaigns, and adding negative keywords to reduce wasted spend, allowing the brand to scale sales while maintaining better advertising efficiency.

These results show how strategic AI-driven data management for campaign optimization, budget allocation, and negative keyword management helped scale sales while improving advertising efficiency.