The verdict in three sentences
A B2B partner extranet in Berlin runs in 2026 between 50,000 and 110,000 EUR, delivered in 4 to 6 months. The number-one cost driver isn't the catalogue but the ERP connection (per-distributor pricing, real-time stock, synced orders). Designed well, an extranet cuts order processing time by around 40 % and removes the re-keying that causes errors.
2026 price grid by complexity
A distributor extranet lives or dies on three axes: fine-grained roles, differentiated pricing, and reliable ERP sync. Here are the 2026 orders of magnitude on the Berlin market.
| Scope | Build price (EUR) | Timeline | Maintenance / yr |
|---|---|---|---|
| Basic (catalogue + orders) | 50,000 - 65,000 | 4 months | 8,000 - 11,000 |
| Standard (+ role pricing + stock) | 65,000 - 85,000 | 5 months | 11,000 - 15,000 |
| Advanced (+ live ERP + invoices) | 85,000 - 110,000 | 6 months | 15,000 - 19,000 |
| Custom (multi-country / multi-currency) | 110,000 - 170,000 | 7-9 months | 19,000 - 28,000 |
The day rate of a qualified team in Berlin sits in 2026 between 650 and 950 EUR. A standard extranet represents roughly 80 to 100 person-days.
The crux: ERP integration
Syncing with the ERP (SAP, Sage, Odoo, Microsoft Dynamics) is the most underestimated line item. It determines stock freshness and pricing accuracy.
| Item | 2026 range (EUR) | Timeline impact |
|---|---|---|
| ERP connector (API or middleware) | 10,000 - 24,000 | +4 to 6 weeks |
| Roles / permissions management | 5,000 - 11,000 | +2 weeks |
| Per-partner custom pricing | 6,000 - 14,000 | +3 weeks |
| Real-time stock + reservations | 5,000 - 12,000 | +2 to 3 weeks |
| UAT with 3-5 pilot distributors | 4,000 - 8,000 | +2 weeks |
In Lyon, a comparable B2B extranet sits in 2026 between 35,000 and 80,000 EUR — France stays competitive, and a cost-efficient francophone partner even more so.
Mini case study
Marc, sales director of a components manufacturer in Berlin, runs a network of 60 distributors. His reps manually enter ~700 orders/month by email and phone, at ~9 minutes each, i.e. 105 h/month.
He invests 75,000 EUR in a standard extranet (orders + role pricing + stock + ERP connection), plus 13,000 EUR/yr in maintenance. Data entry drops 40 %: ~42 h saved/month, valued at 45 EUR = 1,890 EUR/month, or 22,680 EUR/yr. Adding the reduction in order errors (credit notes, returns) estimated at 7,000 EUR/yr, annual gain reaches ~29,700 EUR. The extranet pays back in under 30 months, maintenance included — and far faster as the network grows.
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FAQ
Custom extranet or my ERP's module?
If your ERP already offers a decent B2B portal, start there (often 5,000-15,000 EUR of configuration). Custom wins when distributor experience, complex pricing or multi-channel become strategic.
How long to connect my ERP?
Expect 4 to 6 weeks depending on the available API. A modern ERP with a REST API is fast; a legacy ERP needs middleware, which lengthens timeline and budget.
Can we handle different pricing per distributor?
Yes, it's a standard case: segment grids, negotiated discounts, volume tiers. Budget 6,000 to 14,000 EUR depending on rule granularity.
What annual maintenance budget?
Between 8,000 and 19,000 EUR/yr depending on scope. ERP sync requires active monitoring, hence maintenance slightly higher than a brochure site.
Will distributors actually use it?
Yes if mobile UX is polished and you support the rollout. A pilot with 3-5 distributors before general launch secures adoption.
Let's scope your project. Tell us your ERP, your number of distributors and your pricing complexity; we'll frame the extranet at the right level. 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.
