TL;DR
When Marvya started working with Kreutzers, the challenge went well beyond a shop migration. The premium meat retailer was still running on Magento 1, working with a complex agency setup, and lacked a reliable view of what was actually driving profitable growth.
Within nine weeks, Marvya migrated Kreutzers to Shopify, simplified the tech stack, and rebuilt key parts of the marketing setup. Klar became the shared source of truth for the next phase: helping Marvya and Kreutzers understand acquisition, profitability, and retention in one place.
Since the Shopify launch, Kreutzers has grown new customers by +200% YoY.
This is how Marvya turned a standard shop migration into a highly profitable, scalable growth engine (and how your agency can do it, too).
"The brand was bleeding cash on legacy agencies and an outdated shop. We cut the fat, brought in our predefined tech stack with Klar as the control center, and scaled their new customers by 200%. That’s the power of combining migration with real growth consulting."
The Setup: High Steaks and Legacy Spaghetti Code
Kreutzers is a premium eCommerce brand selling high-end meat, steaks and other food products. But behind the scenes, their tech setup was anything but prime.
They were stuck on the dinosaur that is Magento 1. They were bleeding €45,000 to €50,000 a month in retainer fees to a bloated roster of legacy agencies. To make it even worse, they had already sunk €30,000 into a doomed Magento 2 migration project.
On the marketing front, things were just as raw:
- Inefficient Google and Meta Ads
- Their "retention" metrics were an illusion, heavily skewed by a continuous voucher/credit loop rather than real, profitable returning customers.
- They lacked a Single Source of Truth to actually see what was working.
Marvya’s job was therefore not just to move Kreutzers to Shopify. It was to simplify the setup and create a better foundation for growth.
The Strategy: Butchering the Bloat & Deploying the Stack
Marvya doesn't just build shops, they engineer growth. When they took over the Kreutzers account, they made a bold move: they killed the full €50k/month agency bloat.
Instead of reinventing the wheel, Marvya deployed their predefined tech stack. A curated ecosystem of best-in-class tools designed to plug in, scale up, and print revenue.
They flipped Kreutzers' infrastructure inside out:
- The Migration: Moved from Magento 1 to Shopify in 9 weeks.
- The CRM: Swapped legacy systems for Klaviyo to build real, scalable retention.
- The Finance: Automated accounting with Pathway.
- The Brain: Plugged in Klar as the ultimate Single Source of Truth to track, attribute, and scale their upcoming Growth Consulting phase.
The Second Pillar: Growth Consulting Powered by Klar
Here’s where Marvya is different: instead of charging a one-off project fee for a Shopify build, they’ve successfully established a second pillar: Growth Consulting.
Rather than handing over the new shop and moving on, the team stays involved in the commercial side of the business – including performance marketing, testing, and budget allocation.
This way - working on a share-deal basis - Marvya practically becomes the in-house growth team for their clients.
That makes having a shared and reliable view of performance particularly important: both sides need to understand what is driving growth and whether that growth is profitable.
That’s why Klar is Marvya’s Command Center.
Starting from zero with fresh Meta and Google Ads accounts, Marvya used Klar to allocate Kreutzers’ marketing budget exactly where it actually converts.
Klar brings acquisition data together with profitability and customer data, while its attribution adds first-party tracking and zero-party signals to the picture. This gave Marvya a consistent basis for making and evaluating growth decisions.
For example, when the team tested a lower minimum order value together with a free-shipping offer for first-time customers, they could quickly see how the change affected CAC and profitability – and adjust accordingly.
The strategy and execution remained with Marvya. Klar gave the team the data to make those decisions with more confidence.
The Meaty Results: A Very "Well-Done" Case
By combining a flawless Shopify migration with Klar-powered Growth Consulting, Marvya delivered staggering results for Kreutzers:
- +200% YoY New Customer Growth: Since the Shopify launch, Kreutzers jumped its average NCs figures to +200%
- All-Time Low CAC: In August, Marvya drove New Customer Acquisition Costs down to an incredibly efficient CAC.
- A Shift in Revenue Quality: They successfully transitioned Kreutzers from relying on fake "voucher-loop" retention to highly scalable, profitable new customer acquisition, setting the stage for a massive Q4.
"The brand was bleeding cash on legacy agencies and an outdated shop. We cut the fat, brought in our predefined tech stack with Klar as the control center, and scaled their new customers by 200%. That’s the power of combining migration with real growth consulting."
The Blueprint for Shopify Agencies: Time to Upgrade Your Stack
Marvya’s success with Kreutzers is a perfect blueprint for modern Shopify agencies. If you are only doing migrations, you are leaving the most profitable piece of the pie on the table: long-term, data-driven growth.
Building a Growth Consulting pillar isn't about hiring a massive team of analysts; it's about having the right tech stack.
By adding Klar to your agency’s predefined stack, you can:
- Offer Growth Consulting and performance marketing with total confidence.
- Transition to highly profitable "Share-Deal" / Revenue-Share retainers.
- Give your clients the 'Single Source of Truth' they need to make data-based decisions, dive deep into profitability, and analyze customer monetization.
Stop just building shops. Start building growth engines.
