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From €0 to €31K/month with no efficiency decay - case study cover
Ecommerce (EU)Sept 2025 – Dec 2025

From €0 to €31K/month with no efficiency decay

A clean launch, disciplined scaling, ROAS that improved as spend grew

Sept ROAS

2.29x

Oct ROAS

2.16x

Nov ROAS

2.69x

Dec ROAS

2.86x

Chapter 01

The build (before the numbers)

Five campaigns, each with a specific role. No overlap.

On September 8 we launched a completely new Google Ads account: no historical data, no legacy structure, no prior learnings to lean on. The goal wasn't aggressive scale. It was to build a system that could scale without breaking.

We didn't launch everything at once. The account was rolled out in phases, with each campaign serving a specific role.

Five campaigns, five distinct roles

  • Brand Search to capture existing demand cleanly
  • Search Prospecting to expand high-intent non-brand queries
  • Performance Max (Full Build) for scalable demand capture
  • PMax Retargeting to support return traffic
  • PMax Competitor to test conquesting without polluting core learning

Chapter 02

What the data showed month over month

Spend scaled every month. ROAS improved every month.

Monthly performance progression

MonthSpendROASNote
September (launch)€664.67~2.29xBaseline learning and signal collection
October€1,589.272.16xBudget increased only after early signals stabilised
November€3,995.492.69xSearch prospecting + PMax improved as learning consolidated
December (Dec 1 – 24)€10,846.872.86xSpend crossed five figures, efficiency higher than launch

December is where most accounts see ROAS drop as spend scales. Here it improved because structure was clean from day one.

Originally published on the daily newsletter

Patrick wrote this case study live the week the numbers landed. Read the original on Beehiiv for the full context.

Read the original write-up

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