The verdict in three sentences
A custom distributor extranet costs 40,000 to 90,000 EUR in 2026, the spread driven mainly by ERP/PIM integration and the granularity of roles and permissions. Expect 12 to 20 weeks of sprint-based development and 600 to 1,400 EUR/month maintenance for upkeep and evolutions. The real challenge is not the storefront, it is negotiated per-distributor pricing and real-time sync with your ERP.
Module-by-module estimate
A B2B extranet is built brick by brick. Here is a 2026 order of magnitude for a network of 20 to 200 distributors, EU hosting included.
| Module | Scope | Range |
|---|---|---|
| Auth & SSO | Accounts, roles, SAML | 6,000-11,000 EUR |
| Catalogue & PIM | Products, media, negotiated prices | 9,000-18,000 EUR |
| Ordering | B2B cart, quotas, approval | 10,000-20,000 EUR |
| ERP integration | Stock, prices, statuses in real time | 8,000-22,000 EUR |
| Document space | Contracts, invoices, datasheets | 4,000-9,000 EUR |
| Multi-tenant & scaling | Isolation, cache, CDN | 5,000-12,000 EUR |
A full scope therefore lands at 42,000 to 92,000 EUR. A first release (auth + catalogue + orders) often stays under 45,000 EUR.
Sprint plan
The project runs in 2-week sprints with a demo at each sprint end. Here is a typical 16-week plan.
| Sprint | Weeks | Deliverable | Status |
|---|---|---|---|
| Scoping & design | 1-2 | Mockups, data model | Approved |
| Auth & roles | 3-4 | SSO, granular permissions | QA |
| Catalogue & PIM | 5-8 | Products + negotiated prices | QA |
| Orders | 9-12 | B2B cart + approval | QA |
| ERP integration | 13-14 | Stock/price/status sync | QA |
| QA & go-live | 15-16 | Testing, training, launch | Delivered |
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Mini case study
Karim, sales director at an Amsterdam manufacturer, runs 85 distributors who currently order by email and phone. Each order takes 12 minutes of internal entry; at 1,900 orders/year that is 380 hours, about 11,400 EUR of admin time. An extranet at 62,000 EUR plus 950 EUR/month maintenance automates 80% of entry: a 9,120 EUR/year labour saving, plus fewer errors and misapplied prices. Payback in roughly 3 years, excluding revenue gains from 24/7 availability.
FAQ
How much does a distributor extranet cost in 2026? Between 40,000 and 90,000 EUR depending on modules. ERP integration and per-client negotiated pricing are the main cost drivers.
Must we integrate the ERP from the start? No. You can launch with imports/exports and add real-time sync in sprint 5-6. The sync represents 8,000 to 22,000 EUR.
How are per-distributor negotiated prices handled? Through a multi-tier pricing engine (volume, product family, client discounts) coupled with the PIM. It is the heart of a successful B2B extranet.
What maintenance should we budget? 600 to 1,400 EUR/month depending on traffic, number of connectors and SLA. It covers security, evolutions and monitoring.
Can an extranet support hundreds of distributors? Yes, with a multi-tenant architecture, caching and a CDN. The scaling module represents 5,000 to 12,000 EUR.
Let's scope your project. Distributor extranet 40,000-90,000 EUR, ERP/PIM integration and SSO, delivered in 12-20 weeks: tell us your distributor count and your ERP. 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.
