The verdict in three sentences
Leaving Adobe Commerce (Magento 2) for a B2B store costs EUR 50,000 to 120,000 in migration for a 25,000-product catalog, over 5 to 8 months. Against a current budget of EUR 40,000 a year in license and maintenance plus version upgrades, a well-run migration cuts 5-year total cost by 10 to 40%. The choice between B2B SaaS and custom headless mostly depends on the complexity of your customer pricing and ERP integrations.
Why B2B distributors are leaving Magento in 2026
The e-commerce director of an industrial supplies distributor in Amsterdam knows the routine: quarterly security patches, costly 2.4.x upgrades, B2B extensions that clash with each other, and a maintenance agency billing by the hour. At EUR 40,000 a year the site works, but every change (new payment method, tiered pricing, replenishment portal) is measured in weeks. Alternatives are now mature for B2B: per-account price lists, online quotes, quick order by SKU, multi-buyer accounts with approval workflows.
| Migration item | Scope | 2026 budget (EUR) |
|---|---|---|
| Audit and scoping | Extension inventory, ERP flows, pricing rules | 4,000 to 8,000 |
| Catalog migration | 25,000 products, attributes, variants, media | 8,000 to 18,000 |
| Customers and history | Business accounts, contacts, addresses, 3 years of orders | 5,000 to 12,000 |
| B2B pricing and terms | Per-customer price lists, discounts, freight, net 30 | 6,000 to 16,000 |
| ERP integration | Stock, prices, orders, invoices | 10,000 to 30,000 |
| Design and front end | B2B theme, SKU search, quick order | 8,000 to 20,000 |
| SEO and redirects | 301 map, URL testing, 3-month monitoring | 3,000 to 6,000 |
| Testing and cutover | QA, overnight switch, 4-week hypercare | 6,000 to 10,000 |
5-year total cost: three scenarios
| Scenario | Migration (EUR) | Annual cost (EUR) | 5-year total (EUR) | Strengths |
|---|---|---|---|---|
| Stay on Adobe Commerce | 0 | 40,000 + upgrades of 15,000 to 25,000 every 2 years | 230,000 to 250,000 | No disruption, team in place |
| B2B SaaS (enterprise plan) | 50,000 to 80,000 | 20,000 to 30,000 (subscription, apps, maintenance) | 150,000 to 230,000 | Hosting and security included, automatic updates |
| Custom headless | 80,000 to 120,000 | 12,000 to 20,000 (hosting, maintenance) | 140,000 to 220,000 | Full freedom, code ownership, performance |
SaaS fits if your pricing rules stay standard and native B2B features cover 80% of your needs. Custom headless wins when the ERP is the price master, customers have restricted catalogs, or the site must also feed an ordering app for field sales reps.
Risks to manage
| Risk | Impact | Mitigation |
|---|---|---|
| SEO traffic loss | -20 to -40% organic visits over 3 months | Exhaustive 301 map, testing before cutover |
| Customer passwords | Accounts not migratable in clear text | Guided email reset, activation campaign |
| ERP price mismatches | Orders at wrong price | 2-week parallel run, check on 200 orders |
| Custom extensions not carried over | Missing feature at launch | Inventory and decisions during audit |
| Cutover during peak season | Lost revenue | Switch in a quiet period, not at quarter end |
Mini case study
Daan, e-commerce director of an industrial hardware distributor in Amsterdam, makes EUR 6 million online with 1,800 customer accounts. He pays EUR 40,000 a year and faces a EUR 22,000 upgrade. Chosen option: custom headless at EUR 95,000, then EUR 16,000 a year. Over 5 years he spends EUR 175,000 versus about EUR 244,000 staying on Magento, a EUR 69,000 difference. Meanwhile, catalog page load drops from 3.8 to 1.4 seconds: with an estimated 0.3-point conversion lift, the revenue gain far exceeds the migration cost.
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FAQ
How much does migrating from Magento to another B2B platform cost in 2026?
Between EUR 50,000 and 120,000 for 25,000 products and a connected ERP. A smaller catalog without complex customer pricing can go down to around EUR 35,000.
How long does the migration take?
5 to 8 months, including 4 weeks of hypercare after cutover. ERP integration often accounts for a third of the schedule.
Will we lose our search rankings?
A temporary 5 to 15% dip is common with complete 301s. Without a redirect plan, the loss can reach 40% over 3 months.
Can we keep customer accounts and history?
Yes, accounts, addresses, contacts and 3 years of orders migrate. Only passwords require a reset, handled through an activation campaign.
SaaS or headless: how to decide?
If native features cover over 80% of your needs, SaaS is simpler. Beyond 3 ERP-driven custom pricing rules, custom headless often costs less over 5 years.
Let's scope your project. Send us your product volume, Magento extensions and ERP, and we will price the migration with a 5-year total cost comparison. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
