The verdict in three sentences
A B2B marketplace MVP for used industrial parts costs EUR 35,000 to 60,000 excl. VAT in 2026 and takes 10 to 14 weeks, provided the scope is limited to six journeys. The core value is not the catalogue but trust: quote requests, escrow payment and dispute handling. Everything else (auctions, integrated logistics, mobile app) goes into "Could" or "Won't" under strict MoSCoW prioritisation.
The six priority journeys in the specification
A used industrial part (motor, drive, bearing, PLC) usually has a negotiated price, a variable condition and a buyer who wants guarantees. The specification must therefore describe these journeys precisely, with their business rules, before any mock-up.
| Journey | MVP features | MoSCoW priority | Estimated effort |
|---|---|---|---|
| Seller | Sign-up, company ID check, part listing (reference, condition, photos, certificate) | Must | 12 to 15 days |
| Buyer | Search by manufacturer reference, condition and location filters, alerts | Must | 10 to 14 days |
| Quote | Price request, counter-offer, 7-day validity, history | Must | 8 to 12 days |
| Order | Single-seller cart, PDF purchase order, shipping status | Must | 10 to 12 days |
| Commission | Rate per category (8 to 15%), automatic commission invoice | Must | 5 to 8 days |
| Dispute | Opening within 14 days, escrow freeze, back-office arbitration | Should | 6 to 9 days |
| Reverse auctions | Multi-seller tender | Could | 15 days |
| Native mobile app | iOS and Android | Won't (V2) | 25 days or more |
The practical rule: a "Must" is a feature without which no transaction can complete. If the platform works without it, even poorly, it drops to "Should".
MVP budget and transaction costs
The budget depends mostly on how polished the back office is and on integrating the PSP (payment service provider) with escrow. Here are three 2026 ballpark scenarios.
| Item | Lean MVP | Standard MVP | Comfortable MVP |
|---|---|---|---|
| Scoping and specification | EUR 3,000 | EUR 4,500 | EUR 6,000 |
| UX/UI (journeys and light design system) | EUR 5,000 | EUR 7,500 | EUR 10,000 |
| Front-end and back-end development | EUR 20,000 | EUR 28,000 | EUR 34,000 |
| Escrow PSP integration (Mangopay, Stripe Connect, Lemonway) | EUR 4,000 | EUR 5,500 | EUR 6,500 |
| QA, security, go-live | EUR 3,000 | EUR 3,500 | EUR 3,500 |
| Total excl. VAT | EUR 35,000 | EUR 49,000 | EUR 60,000 |
| Timeline | 10 weeks | 12 weeks | 14 weeks |
For operations, plan for hosting (EUR 150 to 400 per month), corrective maintenance (about 15% of the initial budget per year) and PSP fees.
| Revenue model and fees | 2026 value |
|---|---|
| Platform commission | 8 to 15% of the amount excl. VAT |
| PSP fees per transaction | 1.5 to 2.9% depending on volume and payment method |
| Seller KYC fee | EUR 0 to 3 per check |
| SEPA payout to seller | EUR 0.20 to 1 per payout |
| Premium seller subscription (optional V2) | EUR 49 to 149 per month |
Watch the legal status. Collecting funds on behalf of third parties requires a payment institution licence; using a licensed PSP in marketplace mode avoids that regulatory project.
What the specification must lock down
Three topics derail budgets if they stay vague. First the product data model: manufacturer reference, equivalents, standardised condition (new, refurbished, tested used, for parts). Then the escrow rules: release of funds on receipt, dispute window, fees on cancellation. Finally the back-office roles: who approves a seller, who settles a dispute, who changes a commission rate. Every rule written down saves development back-and-forth.
Mini case study
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Thomas, founder of a used industrial parts marketplace in Lyon, targets 40 sellers (specialised scrap dealers, plants clearing stock) in year one. Average basket: EUR 2,800 excl. VAT. Goal: 60 orders per month by the end of year 1.
- Monthly volume: 60 × EUR 2,800 = EUR 168,000 excl. VAT
- Average commission 11%: EUR 18,480 per month
- PSP fees 2% (borne by the platform): EUR 3,360
- Transactional gross margin: EUR 15,120 per month
With a standard MVP at EUR 49,000 and EUR 600 monthly running costs, the initial investment pays back in just over 3 months at target pace, or roughly 9 to 12 months including the gradual ramp-up.
FAQ
How much does a B2B marketplace MVP cost in 2026?
Budget EUR 35,000 to 60,000 excl. VAT for six journeys, escrow included. Below EUR 30,000, the back office and dispute handling are usually sacrificed, which blocks the first large transactions.
Do I need a licence to collect payments?
Not if you use a licensed PSP in marketplace mode (Mangopay, Stripe Connect, Lemonway). The PSP carries compliance, for 1.5 to 2.9% per transaction.
What commission rate suits industrial parts?
The 2026 market sits between 8 and 15%. High-value parts (over EUR 10,000) bear 6 to 8% better, small references 12 to 15%.
Why MoSCoW rather than a wish list?
It forces every feature into Must, Should, Could or Won't. On an MVP, "Musts" should not exceed 60% of the effort, otherwise the 14-week timeline slips.
Can we launch without a mobile app?
Yes. A responsive web app covers 95% of B2B buyer use. A native app costs EUR 25,000 or more and is justified after 12 months of real data.
Let's scope your project. We frame your B2B marketplace specification (journeys, MoSCoW, escrow PSP) for a budget of EUR 35,000 to 60,000 excl. VAT and a launch in 10 to 14 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.
