The verdict in three sentences
A B2B marketplace for heavy truck parts connecting 120 distributors and 3,000 repair shops in the Greater Toronto Area lives or dies on search quality: VIN, OE part number and cross-references across a 350,000-SKU catalogue. The business model rests on an 8 to 15% commission and split payments handled by Stripe Connect or Adyen for Platforms, which carry the regulatory burden of collecting money on behalf of sellers. At this scope, a Kolonell custom build falls in the complex bracket, 7,000,000 to 15,000,000+ FCFA (EUR 10,670 to 22,870+), and can start in the medium bracket, 4,000,000 to 7,000,000 FCFA (EUR 6,100 to 10,670), with a first batch of sellers.
The market and the commission model
In Ontario, an independent Class 8 truck shop buys parts from 4 to 6 suppliers, by phone or through as many dealer portals. A truck off the road costs the fleet USD 600 to 1,200 a day, so finding the right part in stock nearby matters. The marketplace aggregates distributor inventory and compares price and lead time.
Commission varies with product family margins. The rates below are 2026 ballpark figures seen on B2B parts marketplaces.
| Parts family | Average shop basket | Typical commission | Usual distributor margin |
|---|---|---|---|
| Filtration and service parts | USD 250 to 650 | 12 to 15% | 30 to 40% |
| Brakes (drums, pads, chambers) | USD 450 to 1,600 | 10 to 12% | 25 to 35% |
| Lighting and body parts | USD 200 to 950 | 12 to 15% | 30 to 45% |
| Clutch and drivetrain | USD 1,300 to 4,300 | 8 to 10% | 18 to 25% |
| Engine and fuel injection | USD 1,600 to 6,500 | 8 to 10% | 15 to 25% |
| Commercial truck tires | USD 1,100 to 3,800 | 8% | 12 to 18% |
A commission set too high on low-margin families drives distributors away. Commission rules per family, and sometimes per seller, must be designed in from day one.
Catalogue, search and data
Nobody types 350,000 SKUs by hand. Distributors send feeds (CSV, EDI or API) that the platform normalises and maps to a reference database such as TecAlliance or the ACES and PIES standards common in North America. VIN search decodes the 17-character VIN, with sources such as the free NHTSA vPIC service, then filters compatible parts. OE part number search shows every in-stock equivalent.
The platform also has marketplace obligations: seller identity checks, terms that set each party's liability, and, in Canada, the CRA reporting rules for digital platform operators, which require annual reporting of seller income.
Split payments and platform budget
Collecting a shop's money to pay a distributor is a regulated activity. Stripe Connect and Adyen for Platforms carry that status and run seller KYC; Mangopay, often chosen in Europe, has a lighter North American footprint. Fees below are 2026 indications and drop with volume.
| Criterion | Stripe Connect | Adyen for Platforms | Direct invoicing between parties |
|---|---|---|---|
| Card fee | About 2.9% + USD 0.30 | Interchange++ plus a fixed fee, on contract | Not applicable |
| Bank debit fee | About 0.8%, capped | On contract | USD 0 to 1 |
| Fee per active seller | About USD 2 per month plus 0.25% + USD 0.25 per payout | Included in contract, monthly minimum | None |
| Seller KYC | Built in | Built in | Your own responsibility |
| Net-30 for shops | Via deferred invoicing | Via balance and holds | Native, no guarantee |
| Compliance for third-party collection | Carried by Stripe | Carried by Adyen | Legal risk |
| Platform option, 2026 ballpark | Initial cost | Recurring cost | Fit for truck parts |
| Mirakl | USD 110,000 and more | High annual licence plus share of volume | Yes, for large groups |
| Marketplace SaaS such as Arcadier or CS-Cart Multi-Vendor | USD 5,000 to 40,000 | USD 300 to 3,000 per month | Partly |
| Sharetribe | Low | About USD 100 to 500 per month | No, limited technical search |
| Kolonell custom build, medium | 4,000,000 to 7,000,000 FCFA (EUR 6,100 to 10,670) | Maintenance 35,000 / 75,000 / 120,000 FCFA per month (EUR 53 / 114 / 183) | Yes, first batch of sellers |
| Kolonell custom build, complex | 7,000,000 to 15,000,000+ FCFA (EUR 10,670 to 22,870+) | Same maintenance grid | Yes, VIN search and large feeds |
Technical data subscriptions, search engine hosting and EDI connectors are priced in the quote.
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Priya, founder of a marketplace project in Toronto, targets 300 active shops in year one, each buying USD 1,500 a month. Gross merchandise volume reaches USD 450,000 a month. At a 10% average commission, the platform earns USD 45,000, of which about USD 4,500 goes to payment fees, leaving USD 40,500 net.
Each active shop therefore brings in about USD 135 net per month. With a budget at the top of the complex bracket, EUR 22,870, and Premium maintenance at EUR 183 a month, roughly 30 active shops cover the build within six months: EUR 22,870 / 6 + EUR 183 is about EUR 3,995 a month to cover, which at about 135 per shop takes around 30 shops. This is an estimate to refine with real distributor margins.
FAQ
How many distributors do we need at launch?
About fifteen distributors covering 70% of common SKUs is enough for a regional launch. The 120 target sellers then join in waves of 10 to 20.
How do we stop shops and distributors from dealing directly after the introduction?
By offering value that direct deals lack: live stock comparison, secured net-30 terms and a single invoice. A commission cap on large baskets, for example USD 300, also reduces the temptation.
Stripe Connect or Adyen for Platforms?
Stripe Connect is faster to integrate and fits card-heavy flows. Adyen becomes attractive above roughly USD 10M in annual volume, when interchange++ pricing and negotiated fees pay off.
How long does a first release take?
Allow 12 to 20 weeks for a release with part number search, 15 sellers and split payments. VIN search usually adds 4 to 6 weeks.
What tax obligations apply to the platform?
Canada's reporting rules for digital platform operators require annual reporting of seller income. The platform collects each seller's business number and GST/HST registration at sign-up.
Let's scope your project. Tell us about your pilot distributors, parts families and commission model, and we will scope the catalogue, search, split payments and a launch 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.
