The verdict in three sentences
A partner extranet (distributors, resellers) in Amsterdam costs between 25,000 and 70,000 EUR (net) in 2026, with the ERP connector and access control weighing heaviest. A realistic timeline is 12 to 18 weeks, acceptance testing included. The real ROI lies in shorter order-handling times and the end of manual re-keying.
What makes up the budget
A distributor extranet gives your partners access to their orders, real-time stock, negotiated prices and documents (delivery notes, invoices, product sheets). The cost depends on the level of ERP integration and the granularity of rights (a distributor must see only their own prices).
| Scope | Features | Timeline | Budget 2026 (EUR net) |
|---|---|---|---|
| Base | Catalogue, documents, simple rights | 10-12 wks | 25,000 - 35,000 |
| Orders | + B2B cart, stock, per-client pricing | 12-15 wks | 35,000 - 52,000 |
| Integrated | + two-way ERP connector, EDI | 15-18 wks | 52,000 - 70,000 |
| Platform | + multi-country, multi-currency, API | 18-24 wks | 70,000 - 110,000 |
2026 order of magnitude for an Amsterdam studio, excluding ERP licences and paid connectors.
ERP integration: the sensitive item
Most projects slip on ERP synchronisation (stock, prices, orders). The cost depends on whether an API exists and on sync frequency.
| ERP scenario | Effort | Integration cost 2026 (EUR net) |
|---|---|---|
| Modern documented REST API | Low | 6,000 - 12,000 |
| Partial API / CSV exports | Medium | 12,000 - 22,000 |
| Legacy ERP without API | High | 22,000 - 40,000 |
| EDI with partners | High | 15,000 - 30,000 |
Have your ERP audited before quoting: it is the leading cause of overruns.
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Mini case study
Sophie, sales director of a technical-equipment wholesaler in Amsterdam (90 active resellers), handles 1,400 orders/month received by email, fax and phone. Each order takes ~12 minutes to key and check, i.e. 280 hours/month. The keying error rate is 4 %, generating credit notes and disputes.
She invests 48,000 EUR (net) in an order extranet with an ERP connector. Moving to self-service removes 70 % of manual keying: 196 hours saved/month. At 40 EUR/loaded hour, that is 94,000 EUR/year, not counting errors falling from 4 % to under 0.5 %. The extranet pays back in under 8 months.
FAQ
Extranet or marketplace? An extranet serves your existing partners with negotiated prices; a marketplace recruits third-party sellers. For a closed distribution network, an extranet is simpler and cheaper.
How much does ERP integration cost? Between 6,000 EUR (modern API) and 40,000 EUR (legacy ERP without API). It's the most variable item: audit it first.
Can we manage different prices per client? Yes, it's standard in B2B. Managing price lists by segment or partner is part of the core and is configured without major extra cost.
What timeline for a first version? 12 to 18 weeks depending on ERP integration. A V1 without real-time sync (scheduled imports) can ship in 10 weeks.
How do I secure distributor access? Named-account authentication, per-organisation roles and ideally 2FA. Each partner sees only their own data, a critical point to test in acceptance.
Let's scope your project. Tell us your ERP, partner count and order volumes for a precise estimate. 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.
