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Amazon Ads Success Story: How This Seller Cut ACoS by 57% and Grew Sales 1,400%

What does it really take to improve advertising efficiency on Amazon today? In this Amazon Ads success story, one multi-category seller improved performance in just six months.

“In 6 months, ACOS was reduced from 21% to 9%, and sales growth is 1,400%. Especially, I don’t have to spend any time for many campaigns.”

Overview

Seller Background and Business Model

This seller was based in Japan, and sold Chinese & Japanese products across toys, cameras, accessories, and essential products for natural disasters.

Niche products rarely gain traction fast enough through organic ranking alone. To grow, the seller had to remain present in search while acquiring traffic at costs that still leave room for profit.

The Challenge (Before BQool Stepped In)

Like many experienced sellers, the seller originally ran PPC manually. Keyword discovery wasn’t constant, so new opportunities were missed. This meant managing Advertising Ads grew more time consuming and were not returning desirable results.

Discovering Amazon Advertising Management Services

The seller decided to try BQool’s Amazon Advertising Services after having positive experience of using BQool’s AI- repricing tool.

At first, the results didn’t come quickly, and Nguyen began to feel skeptical. But over time, performance soon improved with dedicated support from the team at BQool, who advised the seller on how to optimize product listings and fine-tuned her ad campaigns.

The Results Over Time

After 6 months, the difference in ad performance was significant.

  • ACoS went down from 21% to 9%
  • Sales grew by 1,400%
  • Several ASINs ranked at the top of search results when users search for related products
  • Significantly less time spend on campaign management
17x
Increase in Ads Sales
12%
Reduction in ACOS
6
Months to Achieve Results

What Drove the Change in Performance

  • Appropriate ad budgets set automatically on ASINs based on campaign performance
  • Bids were adjusted based on target performance
  • Consistent keyword research led to continuous campaign optimization
  • Advice on listings supported higher conversions
  • Highly responsive customer service

Time Savings and Strategic Benefits

Without the need for daily PPC supervision, the seller could redirect attention toward launching products, improving differentiation, and broadening the assortment. Advertising became more reliable, always running, and no longer demanding constant attention.

The client began expanding advertising to more products, a strong indication they were pleased with the results and confident future launches would perform just as well. The time recovered from maintenance was reinvested into other business areas, essentially creating more room for growth.

Amazon Ads Success Story Conclusion

This amazon ad success case study highlights scalable principles that apply to most mature businesses. Performance improves when optimization is continuous, decisions happen quicker, and budgets move toward what is converting. Because conversion rate directly affects acquisition cost, advertising effectiveness and listing quality must work together.

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Naimi Ismadi

February 10, 2026
Naimi Ismadi is a content and marketing specialist at BQool, helping Amazon sellers scale their businesses through clear, engaging insights on repricing tools and smarter selling strategies.

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