The verdict in three sentences
A wholesaler with 10 to 60 staff in Toronto, running thousands of SKUs and per-customer/volume pricing, can structure the business with custom software at 35,000-75,000 EUR: catalog, price grids, orders, stock and invoicing. The return comes from fewer order errors and EDI that removes re-keying with large accounts. The typical timeline is 4 to 7 months; below this pricing complexity, a well-configured standard ERP is enough.
The core issue: price grids
In wholesale, the software's value hinges on pricing. The same product can carry 5 different prices depending on customer, volume and period. A pricing error means lost margin or a dispute.
| Pricing mechanism | 2026 example | Impact |
|---|---|---|
| Base catalog price | 100 EUR | Reference |
| Contractual customer discount | -12 % | 88 EUR |
| Volume tier (>500 u.) | -5 % | 83.60 EUR |
| Quarterly promotion | -3 % | 81.10 EUR |
| Freight included | +2 % | 82.72 EUR |
Applying these rules manually across thousands of lines guarantees errors. An automated pricing engine makes every order reliable and protects margin.
Scope and pricing of wholesale software
| Module | Content | Effort (person-days) |
|---|---|---|
| SKU catalog | Thousands of SKUs, variants | 10-16 |
| Pricing engine | Customer/volume/promo grids | 14-22 |
| Orders | Entry, validation, backorders | 12-18 |
| Multi-warehouse stock | In/out, alerts | 10-16 |
| Invoicing | Invoices, credits, terms | 10-15 |
| EDI / integration | Large-account orders | 10-20 |
Full software totals 65 to 105 person-days. The 35,000-75,000 EUR range depends on the number of pricing rules and the depth of EDI with your retail customers.
Mini case study
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Laurent runs a 25-person technical supplies wholesaler in Toronto, with 12,000 SKUs and a 4 % order error rate. On 18,000 orders/year at a 380 EUR average basket, 4 % errors is 720 problem orders, each costing about 45 EUR (return, credit, time), i.e. 32,400 EUR/year.
Custom software at 58,000 EUR that brings the error rate to 1 % saves about 24,300 EUR/year in disputes, plus the margin preserved by always-correct pricing. Payback in under 24 months on errors alone, faster with EDI gains.
FAQ
How much is the pricing engine alone? The grid engine (customer, volume, promotion, dates) is 14 to 22 person-days, i.e. 9,000-17,000 EUR. It is the highest-value module because it directly protects margin.
How long to build custom wholesale software? An operational scope (catalog + orders + pricing + stock) ships in 3 to 4 months. EDI and advanced invoicing push it to 4 to 7 months.
How much does EDI integration cost? EDI with large accounts (orders, dispatch notices, invoices) is 10 to 20 person-days, i.e. 7,000-16,000 EUR depending on the number of partners and message types.
Can it handle thousands of SKUs without slowing down? Yes: a well-indexed database handles tens of thousands of SKUs with instant search. Performance depends on architecture, not on the SKU count itself.
Custom or off-the-shelf ERP? If your pricing rules are standard, an ERP is enough. Once customer/volume pricing becomes a competitive edge and an error source, custom is economically justified.
Let's scope your project. Share your SKU count, price-grid complexity and EDI needs: we price software scoped to your error reduction. 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.
