The verdict in three sentences
A B2B e-commerce platform for a London wholesaler costs between 25,000 and 70,000 EUR (about 21,000-60,000 GBP) in 2026, depending on the number of customer accounts, pricing-grid complexity and ERP-connector depth. This is not a consumer store: the value lies in per-customer pricing, credit limits, quick ordering and real-time stock/accounting sync. Expect a 3-6 month project and a payback inside year one if you process more than 150 B2B orders a month manually.
What the 25,000-70,000 EUR budget covers
B2B differs from B2C through heavy business rules: each customer sees their own prices, payment terms and authorised credit. Here is a typical breakdown for a London wholesaler.
| Line item | EUR range | Detail |
|---|---|---|
| Scoping & specs | 3,000 - 6,000 | Workshops, pricing rules, order journeys |
| Catalogue & product data | 4,000 - 9,000 | PIM import, variants, units, packaging |
| Multi-user customer accounts | 4,000 - 10,000 | Buyer/approver roles, credit, history |
| Per-customer price grids | 3,500 - 8,000 | Discounts, negotiated prices, quantity tiers |
| ERP / accounting connector | 6,000 - 18,000 | Sage, NetSuite, SAP B1: stock, prices, orders |
| Online payment & quotes | 2,500 - 6,000 | Bank transfer, card, PDF quote generation |
| UAT, training, go-live | 2,000 - 5,000 | Testing, data migration, load handling |
A 25,000 EUR project suits a wholesaler with 30-80 customers and a standard ERP. Above 200 customers, complex grids and several warehouses, you quickly reach 55,000-70,000 EUR.
The B2B specifics that drive the price
| B2B feature | Impact | 2026 ballpark |
|---|---|---|
| Credit limit & outstanding balance | Blocks orders over limit | +3,000 - 6,000 EUR |
| Quick order (SKU/CSV) | -40% customer entry time | +2,000 - 4,000 EUR |
| Online quotes + follow-up | +15-25% conversion | +2,500 - 5,000 EUR |
| Recurring orders | 2-click reorder | +1,500 - 3,500 EUR |
| Two-way ERP connector | Zero double entry | +6,000 - 18,000 EUR |
| Multi-warehouse / live stock | Reliable per-site availability | +3,000 - 7,000 EUR |
The ERP connector is almost always the heaviest and most underestimated line: it removes double entry and makes displayed stock trustworthy.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Thomas, sales director of an industrial-supplies wholesaler in London, manages 120 trade customers. His 4 reps each spend 2 h/day keying in orders received by phone and email, i.e. 8 h/day at 32 EUR/h loaded = 256 EUR/day, about 5,100 EUR/month. He invests 42,000 EUR in a B2B platform with a Sage connector. After 4 months, 65% of orders go self-service: he frees roughly 3,300 EUR/month of sales time, or 39,600 EUR/year. The platform pays back in 13 months, and his reps refocus on prospecting.
FAQ
What is the minimum budget to start in B2B? Around 25,000 EUR for a portal with customer accounts, per-customer pricing and payment on a standard ERP. Below that you only get a disguised B2C catalogue without credit rules.
Is the ERP connector really essential? Yes from 80-100 customers: without it, your teams re-key every order into Sage or NetSuite. The connector costs 6,000 to 18,000 EUR but removes dozens of monthly hours of errors.
How long to deliver the platform? Between 3 and 6 months: 1 month scoping, 2-3 months development, 1 month UAT and data migration. A catalogue above 10,000 SKUs lengthens migration.
Can we keep negotiated prices confidential? Yes: each customer logs in and sees only their grid. Tiered discounts and special prices are per-account, invisible to other buyers.
What annual maintenance should we budget? Around 15-20% of the initial budget per year, i.e. 4,000 to 12,000 EUR, for hosting, connector updates and support.
Let's scope your project. Tell us your ERP, your number of trade customers and your pricing grids: we will quote a fitting B2B portal, from a 25,000 EUR Starter to a 70,000 EUR connected platform. 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.
