The verdict in three sentences
A B2B industrial spare parts marketplace MVP costs 60,000 to 120,000 EUR with a Berlin agency in 2026, for 12 weeks of work at day rates of 700 to 950 EUR, covering multi-vendor catalog, request for quote and a 6 to 10 % commission. Stripe Connect split payments add around 20,000 EUR and should only come once the first transactions are validated off-platform. A remote studio with the same scope typically quotes 35,000 to 55,000 EUR, which is worth benchmarking before you sign.
What the MVP must contain, and what can wait
Industrial maintenance has one defining trait: a stopped plant often loses 5,000 to 50,000 EUR per hour, and the buyer is hunting for a precise part number (SKF bearing, Siemens drive, hydraulic seal) available fast. The MVP must solve that urgency, not rebuild Amazon. 2026 ranges for a team of 3 to 4 in Berlin (order of magnitude).
| Module | In MVP | Budget | Weeks |
|---|---|---|---|
| Multi-vendor catalog with CSV or API import | Yes | 15,000 to 25,000 EUR | 3 |
| Search by manufacturer part number and equivalents | Yes | 12,000 to 22,000 EUR | 2 |
| Request for quote (RFQ) and distributor response | Yes | 12,000 to 22,000 EUR | 2.5 |
| Multi-site buyer accounts, roles and approvals | Yes | 8,000 to 18,000 EUR | 1.5 |
| Commission back office, platform invoicing | Yes | 8,000 to 18,000 EUR | 2 |
| Design, QA, production launch | Yes | 5,000 to 15,000 EUR | 1 |
| Stripe Connect split payments and vendor KYC | Phase 2 | 18,000 to 25,000 EUR | 3 |
| Buyer ERP connectors (SAP, Microsoft Dynamics) | Phase 3 | 20,000 to 45,000 EUR | 4 to 6 |
The MVP total lands between 60,000 and 120,000 EUR. Integrated payment waits for a simple reason: in industrial B2B, 70 to 80 % of buyers pay on invoice at 30 to 60 days. Until volume justifies factoring or embedded deferred payment, the commission is invoiced to the distributor.
Business model: commission, subscription and funding
The commission must stay below the distributor's margin, often 20 to 35 % on spare parts. Above 10 %, vendors route around the platform.
| Lever | 2026 assumption | Effect on budget |
|---|---|---|
| Transaction commission | 6 to 10 % of basket, average basket 850 EUR | 51 to 85 EUR per order |
| Premium distributor subscription | 150 to 400 EUR/month | Predictable revenue from 20 vendors |
| Stripe Connect fees | 1.5 % + 0.25 EUR per EU card, 0.25 % of payouts | Pass through in commission |
| EXIST start-up grant (university spin-offs) | Living stipend plus up to 30,000 EUR material costs | Covers part of the build |
| Berlin Startup Stipendium or IBB Pro FIT | Grants and loans, project-dependent | Leverage for bank financing |
| Remote studio benchmark | 35,000 to 55,000 EUR for same scope | 40 to 55 % saving |
Mini case study
Jonas, a former maintenance manager at a chemical plant in Brandenburg, launches his marketplace with an MVP at 90,000 EUR from a Berlin agency, partly funded by an EXIST grant. After 6 months, 35 distributors and 180 factories are active, with 220 orders a month at an 850 EUR average basket, so 187,000 EUR of monthly volume. At 8 % commission, the platform earns 14,960 EUR per month. The Stripe Connect phase at 20,000 EUR is funded by under two months of commissions, and the MVP is recovered in about 6 months at this level. With a remote studio at 45,000 EUR, payback would drop to 3 months.
FAQ
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
How much does a B2B marketplace MVP cost in Berlin in 2026?
Plan 60,000 to 120,000 EUR for a 12-week MVP without embedded payments, at 700 to 950 EUR day rates. With Stripe Connect and vendor KYC, budget 80,000 to 145,000 EUR.
Should payments be integrated from day one?
Rarely in industrial B2B, where 70 to 80 % of buyers pay on invoice at 30 to 60 days. Validate 100 to 200 transactions first, then add split payments.
Which commission rate should I pick?
Between 6 and 10 % on spare parts, given distributor margins of 20 to 35 %. Above that, bypass grows quickly.
Which public funding is available?
EXIST supports university spin-offs with stipends and up to 30,000 EUR of material costs; IBB programs in Berlin add grants or loans. Expect 2 to 4 months of processing.
Why 12 weeks rather than 6?
Part number search and cross-manufacturer equivalents require real data work. An MVP rushed in 6 weeks often misses the one thing an urgent buyer cares about.
Let's scope your project. Describe your distributor network, first buyers and commission model, and we will price an MVP from 35,000 EUR, deliverable in 12 weeks. 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.
