01The challenge
Where the account was stuck.
A seller of Shelly products wanted to increase their sales on the main products of their portfolio.
Shelly: €326,982 in Ad Sales at Just 4.28% ACoS
Shelly
A Shelly reseller wanted to boost sales across DE, IT, FR, and ES without overspending. With AdFixer’s managed structure and continuous optimization, we scaled to €326,982.88 in ad sales while keeping efficiency extremely high at just 4.28% ACoS.
Hardware·Amazon US·Published December 15, 2025
4,28%
ACOS AFTER
0%
ACOS BEFORE
13,991.73
SPEND AFTER
0
SPEND BEFORE
The account we inherited, and what we changed.
02How we fixed it
What the algorithm did.
We created a proper campaign structure for the specific case, focusing on increasing sales without overspending. The result was a big increase in sales, backed up by the advertising efforts.
The full write-up
Week by week, with the numbers.
Shelly (Hardware) is a reseller operating across DE, IT, FR, and ES who wanted to increase sales on the main products in their portfolio without overspending. Their main goal was simple: better ROAS with a setup that could scale across multiple marketplaces.
We worked with them on a managed AdFixer engagement and built a proper campaign structure tailored to their catalog and markets. The focus was on scaling sales responsibly: pushing volume where performance was strong, tightening targeting where spend wasn’t efficient, and continuously optimizing to keep growth profitable.
From 01 Sep – 31 Oct 2025, the account generated €326,982.88 in ad-attributed sales on €13,991.73 spend, holding ACoS at just 4.28% which equals a 23.37× ROAS. Since the “before” baseline was effectively 0 (no prior comparable ads data), this period represents a clean, profitable scale-up from launch.
Results
What changed in the account.
01
AD SALES: €326,982.88
02
ACOS: 4,28%
03
ROAS: 23.37
Your turn
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