The verdict in three sentences
A working B2B agricultural parts marketplace costs between EUR 60,000 and 140,000 excl. VAT in 2026 and ships in 5 to 7 months. The line item that blows budgets is not payments but the catalogue normalised on manufacturer part numbers and serial number search, which drive conversion among workshops and farmers. With a 6 to 12% commission on a realistic EUR 4 to 8 million of transactions in year three, the platform pays back its development in 18 to 30 months.
What each building block costs
Agricultural machinery has a quirk: the same part (filter, bearing, belt) exists under the John Deere, Claas, New Holland and Kubota number and under the original supplier's number. Without a cross-reference table, buyers find nothing and call their usual dealer. That is where the budget is decided.
| Functional block | MVP (EUR excl. VAT) | Full version (EUR excl. VAT) | Indicative duration |
|---|---|---|---|
| Multi-vendor catalogue and CSV/API stock import | 9,000 | 18,000 | 4 to 6 weeks |
| Manufacturer / OEM cross-reference table | 8,000 | 22,000 | 4 to 8 weeks |
| Serial number search and machine exploded views | 7,000 | 20,000 | 3 to 7 weeks |
| Stripe Connect split payments and payouts | 8,000 | 14,000 | 3 to 4 weeks |
| Business accounts, negotiated prices, 30-day terms | 6,000 | 16,000 | 3 to 5 weeks |
| Vendor area, orders, disputes, invoicing | 10,000 | 22,000 | 4 to 6 weeks |
| Shipping calculation (parcel, pallet, courier) | 4,000 | 10,000 | 2 to 3 weeks |
| QA, security, go-live | 8,000 | 18,000 | 3 to 4 weeks |
| Total | 60,000 | 140,000 | 5 to 7 months |
The low end matches a launch on 2 or 3 tractor brands with 15 pilot distributors. The high end covers all 50 distributors, interactive machine diagrams and deferred payment for contractors and machinery cooperatives, which often account for more than 40% of volume.
Which commission model to choose
The commission must stay below the distributor's gross margin, which runs around 25 to 35% on wear parts and 12 to 18% on engine parts. Above 12%, vendors inflate their prices on the platform or push customers back to the phone.
| Model | 2026 rate or amount | Upside | Limit |
|---|---|---|---|
| Flat commission | 8% of net price | Easy to explain | Penalises heavy, low-margin parts |
| Commission by family | 6% engine, 10% wear, 12% accessories | Matches real margins | Finer configuration |
| Vendor subscription only | EUR 150 to 400 per month | Predictable revenue | Deters small distributors |
| Hybrid subscription + commission | EUR 90 per month + 5% | Good balance | Case-by-case negotiation |
| Stripe Connect payment fees | 1.5% + EUR 0.25 per transaction (EU card) | Built into the flow | Pass on or absorb |
| SEPA transfer via Stripe | 0.8% capped at EUR 5 | Suits large orders | 3 to 5 days to settle |
For 50 distributors, the commission by part family model gives an average rate of 8 to 9% in practice. Stripe Connect split payments automatically pay the vendor share and keep the commission without ever holding funds, which avoids needing a payment institution licence.
Technical choices that avoid a rebuild
Three decisions determine the platform's lifespan. First, a central product master rather than listings created by each vendor: otherwise the same bearing shows up 50 times with 50 labels. Second, stock connectors to distributors' software (Irium, Isagri, dealer DMS) synchronising every 15 to 60 minutes. Third, typo-tolerant search on part numbers (spaces, dashes, leading zeros) through Meilisearch or Elasticsearch, with response times under 200 ms.
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Budget for recurring costs too: hosting and search engine EUR 400 to 900 per month, corrective and evolutive maintenance EUR 1,500 to 3,500 per month, i.e. 15 to 20% of the initial budget per year.
Mini case study
Thomas, former sales manager at an agricultural machinery dealership near Rennes, brings together 50 distributors. He invests EUR 110,000 excl. VAT in the full version, plus EUR 30,000 per year in maintenance and hosting.
Conservative assumption: EUR 2.5 million volume in year one, EUR 5 million in year two, EUR 7 million in year three, at an average rate of 8.5%. Commission revenue: EUR 212,500, then EUR 425,000, then EUR 595,000. After maintenance and a two-person sales team (EUR 130,000 per year fully loaded), cumulative net margin turns positive around month 20. The EUR 110,000 investment is paid back within two years if year-one volume reaches at least 60% of the assumption.
FAQ
Should we start from an off-the-shelf solution like Mirakl or Sharetribe? Mirakl generally starts above EUR 100,000 per year in licence fees and suits large volumes. Sharetribe costs EUR 100 to 300 per month but handles part cross-references and deferred payment poorly. Custom development makes sense as soon as serial number search is a selling point.
How long does it take to onboard 50 distributors? Allow 2 to 4 weeks per wave of 10 distributors, including catalogue mapping. Budget EUR 3,000 to 8,000 for data migration if their files are inconsistent.
Does Stripe Connect support 30-day payment terms? Stripe does not extend credit itself, but you can combine a B2B buy-now-pay-later partner (1 to 3% fees) with Connect payouts. The distributor is paid at D+2, the buyer pays at 30 days.
How fast can we launch? An MVP with 15 distributors and 2 brands ships in 3 to 4 months. The full version takes 5 to 7 months.
What commission will distributors accept? Between 6 and 10% on wear parts in most 2026 negotiations, provided the platform brings new customers and not just their existing ones.
Let's scope your project. Send us the number of distributors, target brands and an indicative budget: we will price the MVP and the full version with a 5 to 7 month schedule. 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.
