The verdict in three sentences
A B2B e-commerce replatforming in Toronto costs 30,000 to 90,000 EUR in 2026 and spans 3 to 6 months. The real risk is not the budget but lost revenue: without a 301 redirect plan or serious UAT, a failed migration costs -20 to -35 % of revenue for several weeks. With a rigorous roadmap (catalogue/customer migration, promo freeze, testing), the cutover happens without loss.
What a B2B migration costs
A migration is not a simple redesign: you must move the catalogue, customer accounts, order history and above all the pricing rules. Here are the 2026 line items.
| Line item | 2026 range (EUR) | Watch point |
|---|---|---|
| Audit + migration strategy | 4,000 - 10,000 | URL and data mapping |
| Catalogue + PIM migration | 6,000 - 20,000 | Variants, units, media |
| Customer + pricing migration | 5,000 - 18,000 | Per-customer grids, credit |
| 301 redirect plan | 3,000 - 8,000 | Preserve SEO and links |
| ERP/payment re-integration | 6,000 - 25,000 | Stock, prices, orders |
| UAT + cutover | 6,000 - 15,000 | Testing, rollback plan |
A median project in Toronto sits around 45,000 to 65,000 EUR. The most underestimated line item remains per-customer pricing migration and UAT.
The cost of failure vs the cost of method
The question is not "how much does the migration cost" but "how much does a failed migration cost". Here is the order of magnitude.
| Scenario | Controlled migration | Rushed migration |
|---|---|---|
| Project budget | 55,000 EUR | 30,000 EUR |
| 301 redirects | Complete | Partial |
| SEO traffic loss | 0 - 5 % | 25 - 40 % |
| Revenue loss (3 months) | 0 - 3 % | 20 - 35 % |
| Time to recover | Immediate | 3 - 6 months |
| Real total cost (yr 1) | 55,000 EUR | 30,000 EUR + losses |
For a B2B store at 2 M EUR annual revenue, a 25 % loss over a quarter represents 125,000 EUR gone: far more than the saving from cutting UAT and redirects.
A no-loss roadmap
The method that protects revenue has six steps: map all URLs and data, freeze promotions and pricing reworks during the cutover, migrate catalogue then customers, deploy an exhaustive 301 redirect plan, run UAT in a production-like environment, then cut over on a quiet weekend with a rollback plan ready. Then monitor Search Console and daily revenue for 30 days.
Mini case study
Julien, e-commerce director of a technical-parts distributor in Toronto, migrates a store at 2.4 M EUR annual revenue. One vendor offers the migration at 32,000 EUR with no detailed redirect plan; Kolonell prices 58,000 EUR with exhaustive 301s and full UAT.
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Julien picks the 58,000 EUR option. The cutover costs only 1.5 % of revenue in the transition month, or 3,000 EUR. The low-cost scenario would likely have caused -25 % over a quarter, or 150,000 EUR in losses. The 26,000 EUR budget gap protects 147,000 EUR: a 5.6x ROI on loss avoidance alone.
FAQ
How much does a B2B e-commerce migration cost in Toronto?
Between 30,000 and 90,000 EUR depending on data volume and integrations. A median project sits around 45,000 to 65,000 EUR.
How much revenue can a failed migration cost?
Between 20 and 35 % for several weeks, mainly from missing 301 redirects and a drop in search rankings.
Why freeze promos during the cutover?
To isolate variables: if a problem arises, you want to know it comes from the migration and not a simultaneous promo. It speeds diagnosis and rollback.
How long does a migration take?
3 to 6 months depending on complexity. The final cutover is ideally done on a low-traffic weekend, with a rollback plan ready.
Are 301 redirects really essential?
Yes. Without them, you lose acquired rankings and inbound links, which can cost 25 to 40 % of SEO traffic for months.
Let's scope your project. Send us your current platform, SKU volume and revenue, and we will price a no-loss migration with redirect plan and UAT. 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.