The verdict in three sentences
A wholesale ordering portal costs between EUR 45,000 and EUR 130,000 in 2026, with ERP integration often 30 to 40 percent of the budget. Return on investment comes from a 40 to 70 percent drop in phone orders and more reliable replenishment. The classic trap: underestimating stock and credit-limit synchronisation between the ERP and the portal.
The line items that shape the budget
A wholesaler digitising 500 resellers needs a per-segment catalogue, credit-limit management and smart replenishment. Here is the typical Amsterdam breakdown for 2026.
| Line item | 2026 range (EUR) | Business impact |
|---|---|---|
| Catalogue segmented per reseller | 12,000 - 30,000 | Correct prices and ranges |
| Credit limits + outstanding balances | 8,000 - 22,000 | Fewer bad debts |
| Replenishment + recurring orders | 6,000 - 18,000 | Loyalty |
| Real-time ERP integration | 12,000 - 35,000 | Reliable stock |
| Sales workspace + reporting | 5,000 - 15,000 | Steering |
| Training + onboarding | 3,000 - 10,000 | Adoption |
A serious minimum foundation starts at EUR 45,000. Multi-warehouse projects with contractual pricing and EDI exceed EUR 110,000.
Market solution or custom build?
Between a packaged B2B solution and a custom portal, the trade-off hinges mainly on the granularity of your replenishment and credit rules.
| Criterion | Packaged B2B solution | Custom portal |
|---|---|---|
| Upfront cost | 15,000 - 45,000 EUR | 45,000 - 130,000 EUR |
| Per-segment catalogue | Standard | Unlimited |
| Credit limits | Basic | Fine-grained rules |
| ERP integration | Limited connectors | Real-time dedicated API |
| Automated replenishment | Rare | Fully custom |
| Timeline | 8 - 14 weeks | 5 - 8 months |
If you manage contractual pricing per reseller and history-based replenishment, custom quickly becomes essential. Otherwise, a packaged solution launches faster.
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Mini case study
Helene, sales director of a beverage wholesaler in Amsterdam, serves 500 resellers and receives 260 orders/day by phone and fax. Two assistants spend the equivalent of 3.5 FTE at EUR 32,000 loaded/year, i.e. EUR 112,000/year. A portal at EUR 96,000 moving 55 percent of orders to self-service saves roughly EUR 61,000/year and removes 8 percent of entry errors (credit notes estimated at EUR 18,000/year). Estimated payback in about 15 months.
FAQ
How much is ERP integration in this kind of project? Between EUR 12,000 and EUR 35,000 depending on the ERP (Sage, SAP Business One, Exact) and the level of real-time sync. It is often the most sensitive part of the project.
How much do phone orders drop? In practice, 40 to 70 percent of orders shift to self-service over 6 to 12 months, provided you support reseller adoption.
Do we need credit-limit management? Yes for a wholesaler: credit-limit management blocks orders from over-limit customers and protects cash flow. Budget EUR 8,000 to 22,000.
What timeline for a 500-reseller portal? Between 5 and 8 months, the main effort being ERP integration and migrating contractual pricing.
Can EDI be added later? Yes, EDI (electronic data interchange) can be phased in; budget EUR 10,000 to 25,000 depending on the number of partners and formats.
Let's scope your project. Tell us your reseller count, your ERP and your contractual pricing rules for a tailored estimate. 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.