Magento B2B replatforming cost in Dublin

The verdict in three sentences

For a manufacturer whose Magento is no longer maintained, moving to a B2B platform costs between 35,000 and 90,000 EUR in 2026, whether the agency is in Dublin or Nantes, depending on the target: Shopify Plus, Sylius, Adobe Commerce or custom. The price is driven by migrating 15,000 products, customer accounts with negotiated prices and the SEO redirect plan, not by the theme. At 2,500 EUR a month in fixes and a growing security risk, waiting until 2027 already costs 30,000 EUR a year with no improvement.

Comparing target platforms

The target choice drives 60% of the budget and the annual cost for the next 5 years. For a 15,000-SKU catalog with B2B accounts, customer pricing and quotes, here are 2026 ballpark figures.

Adobe Commerce licences depend on online revenue and are negotiated: the amounts above are estimates for 2 to 5 million EUR of web revenue. Dublin agency day rates (650 to 950 EUR) sit slightly above western France (550 to 800 EUR), so expect the upper half of each range.

Where the migration budget goes

On a typical 55,000 EUR project, the split is fairly stable across targets.

The SEO plan is the most underestimated package. Without a complete redirect map, a B2B site commonly loses 30 to 50% of organic traffic for 3 to 6 months. For 15,000 products and 400 categories, the map often exceeds 20,000 lines, generated automatically and then spot-checked.

A realistic 4 to 7 month plan

Month 1: scoping and platform choice. Months 2 and 3: data migration on staging, ERP integration. Months 4 and 5: B2B journeys and business testing with 3 to 5 pilot customers. Final month: weekend cutover, order freeze of 24 hours maximum, close SEO monitoring for 8 weeks.

Mini case study

Julien, e-commerce manager at an agricultural equipment manufacturer, pays 2,500 EUR a month in Magento fixes, or 30,000 EUR a year, plus 6,000 EUR hosting. He picks Sylius for 58,000 EUR with 5,000 EUR hosting and 6,000 EUR annual maintenance. Recurring saving: 36,000 EUR minus 11,000 EUR, or 25,000 EUR a year. The online ordering rate among his 900 trade customers rises from 31% to 40% thanks to quick order by SKU, on 3 million EUR of web revenue, about 870,000 EUR of extra orders captured online. The project pays back in under 2 years on maintenance savings alone.

FAQ

How much does a Magento migration cost in 2026?

Expect 35,000 to 90,000 EUR for a 15,000-product B2B catalog, depending on the target. Shopify Plus is the cheapest to build, Adobe Commerce the most expensive in licence fees.

Should we stay on Magento 2 or switch platforms?

Magento Open Source 2.4 keeps your habits but requires building B2B features. If your in-house team is small, a hosted option like Shopify Plus cuts maintenance by 50 to 70%.

Will we lose search rankings?

Not with a complete 301 redirect plan and SEO testing before cutover. Without it, organic traffic loss often reaches 30 to 50% for several months.

How long does the project take?

Four months for a SaaS target like Shopify Plus, 6 to 7 months for Adobe Commerce or custom. ERP integration usually sets the critical path.

Can customer accounts and passwords be migrated?

Accounts, companies, addresses and negotiated prices migrate fully. Passwords are not always compatible, so a reset invitation is sent at first login, with 85 to 90% reactivation within 3 months.

Let's scope your project. Send us your Magento version, SKU count, ERP and date constraints, and we will price the target platform, data migration and SEO plan. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.