The verdict in three sentences
A partner extranet for a Berlin manufacturer costs between €28k and €60k depending on ERP integration depth and role granularity. The heart of the project is not design but per-partner permissions (negotiated pricing, discounts, credit limits) and catalogue/order synchronisation. Done well, it shifts 40% of sales calls to 24/7 self-service.
What should the requirements document contain?
A B2B reseller extranet lives or dies on the precision of its business rules. These are the modules to scope before pricing.
| Module | Key feature | Priority | Budget impact |
|---|---|---|---|
| Catalogue | Products, stock, spec sheets | High | Medium |
| Negotiated pricing | Per-partner prices, discounts, tiers | High | High |
| Ordering | B2B cart, quotes, reorder, history | High | High |
| Roles & permissions | Per-reseller access, multi-user | High | Medium |
| After-sales | Tickets, returns, warranties | Medium | Medium |
| ERP integration | Catalogue, stock, order sync | High | High |
The most underestimated item: negotiated pricing. Each partner sees their own prices, discount tiers and credit position. That is what separates an extranet from a plain online catalogue.
How much to budget by scope?
| Level | Scope | 2026 budget (€) | Timeline |
|---|---|---|---|
| Core | Catalogue + ordering + simple roles | 28k – 40k | 3 – 4 mo |
| Intermediate | + negotiated pricing + after-sales + notifications | 40k – 52k | 4 – 5 mo |
| Advanced | + two-way ERP integration + reporting | 52k – 60k | 5 – 6 mo |
| Premium | + reseller mobile app + advanced BI | 60k – 90k | 6 – 8 mo |
Plan 8-15%/year maintenance and a separate ERP integration budget (€5k-€15k) depending on your system (SAP, Microsoft Dynamics, Odoo).
Mini case study
Thomas runs a components manufacturer in Berlin, 45 active resellers. His sales team fields around 120 calls a week about availability, prices and order status. Each call takes 12 minutes on average — 24 hours/week of a full-timer at a loaded €36/hour, close to €41k/year. He invests €45k in an intermediate extranet (negotiated pricing, ordering, after-sales) plus SAP integration. By moving 40% of requests to self-service, he frees roughly €16k/year of sales time in year one, redeployed to prospecting, and resellers now order 24/7. ROI lands around 20 months, before counting revenue gains from always-on availability.
FAQ
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Extranet or marketplace: what's the difference?
An extranet serves your known partners with negotiated pricing and precise rules. A marketplace opens to third-party sellers and buyers with commission. Architecture and budget differ sharply.
Must we integrate the ERP from day one?
Not necessarily. You can start with a semi-automated catalogue and integrate the ERP in phase 2. But if stock moves fast, real-time sync quickly becomes essential.
How do you handle per-partner pricing?
Via price lists assigned per account, with discount tiers and conditions. Each reseller sees only their prices. It is the most structuring item in the requirements.
What's a realistic go-live timeline?
Expect 3 to 5 months for an intermediate scope, including discovery, development and a testing phase with a few pilot resellers.
Can we open self-service ordering safely?
Yes: capped credit limits, automatic or manual approval by amount, and logging. Self-service cuts data-entry errors while keeping control.
Let's scope your project. Tell us your reseller count, your ERP and your negotiated-pricing rules, and we'll frame scope and budget. 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.
