The verdict in three sentences
A custom B2B e-commerce platform in Berlin costs between 40,000 and 110,000 EUR in 2026, with a delivery time of 4 to 8 months depending on catalogue and ERP complexity. The real challenge is not the storefront but the B2B business rules: negotiated per-account pricing, credit limits, quotas, and quick order-by-SKU. Done right, it captures +25% of orders placed in the evening and on weekends, outside your sales reps' hours.
What drives the price of a B2B platform
A B2C store shows a public price and takes card payments. A B2B store must handle price lists per customer account, volume discounts, approved credit limits, purchase orders and deferred invoicing. It is this business logic, and its synchronisation with the ERP, that explains the budget gap.
| Item | 2026 range (EUR) | Timeline |
|---|---|---|
| Scoping + B2B specs | 4,000 - 9,000 | 2-4 wks |
| Catalogue + search engine | 8,000 - 22,000 | 4-8 wks |
| Per-customer pricing + credit | 7,000 - 18,000 | 3-6 wks |
| Quick reorder | 4,000 - 12,000 | 2-4 wks |
| ERP / stock integration | 10,000 - 30,000 | 6-12 wks |
| Testing + go-live | 4,000 - 9,000 | 2-3 wks |
| Project total | 40,000 - 110,000 | 4-8 months |
The higher figures apply to catalogues over 20,000 SKUs, product configurators, and connections to proprietary ERPs (SAP Business One, Sage, Microsoft Dynamics).
Dedicated B2B platform vs. repurposed B2C store
Many wholesalers first try to adapt a B2C solution. It is cheaper to buy but the B2B rules end up as costly patches.
| Criterion | Dedicated custom B2B | Repurposed B2C |
|---|---|---|
| Upfront cost | 40,000 - 110,000 EUR | 12,000 - 30,000 EUR |
| Per-customer pricing | Native | Fragile plugin |
| Credit / limits | Managed | Absent |
| Order by SKU | Yes | Rare |
| ERP integration | Bidirectional | Limited export |
| 3-year cost (TCO) | Controlled | Balloons in maintenance |
| Trade-customer adoption | High | Medium |
Mini case study
Julian, sales director of an industrial-supplies wholesaler in Berlin, manages 340 trade customers. His 6 reps spend 40% of their time keying in orders received by phone and e-mail. He invests 68,000 EUR in a B2B platform with per-account pricing and a SAP connection. Six months later, 55% of orders go through online, including +25% outside business hours. Reps redeploy 2 days/week to prospecting; the estimated additional margin gain reaches 90,000 EUR/year, a payback in under 10 months.
FAQ
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How much does a B2B e-commerce platform cost in Berlin in 2026?
Budget between 40,000 and 110,000 EUR depending on catalogue and ERP integration. A focused first version (per-customer pricing + quick reorder) can start around 45,000 EUR.
How long to launch?
From 4 to 8 months. Scoping and ERP integration often account for half the timeline; the ordering front end develops faster.
Can we keep our current ERP?
Yes, in almost all cases. The bidirectional integration (products, stock, prices, orders) costs 10,000 to 30,000 EUR depending on the ERP and its APIs.
Should prices be public?
No. In B2B, price lists are confidential and specific to each account; prices appear after login, protecting your commercial policy.
What concrete gain to expect?
On average +25% of orders outside business hours and a 30-50% drop in manual data entry, redeployed to prospecting.
Let's scope your project. Share your catalogue size, your ERP and the number of trade customers to connect: we frame an indicative budget between 40,000 and 110,000 EUR. 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.
