The verdict in three sentences
In 2026, a wholesale ordering portal in Amsterdam costs between 22,000 and 90,000 EUR (excl. VAT), depending on the number of per-customer catalogues, stock freshness (real-time or batched) and integration with your ERP. The portal does not replace your sales reps: it absorbs repetitive reorder traffic to free time for value-added selling. Well designed, it lifts the average basket and cuts data-entry errors by over 80%.
Cost of a wholesale portal by tier
Wholesalers have specific needs: customer-filtered catalogue, contract prices, quick order by SKU, backorder handling. Here are the 2026 budgets.
| Tier | Scope | Price EUR (excl. VAT) | Timeline |
|---|---|---|---|
| Simple reorder | Catalogue, cart, per-customer prices | 22,000 - 38,000 | 8-11 wks |
| Standard | + real-time stock, backorders, history | 40,000 - 62,000 | 12-16 wks |
| Advanced | + bidirectional ERP, EDI, mobile app | 65,000 - 90,000 | 18-22 wks |
| Support/hosting | Support, evolutions, SLA | 800 - 3,000/mo | recurring |
Quick order (bulk SKU entry, CSV import, one-click reorder) is the function that generates the most value for experienced trade buyers.
Key functions and their cost
| Function | Effort (person-days) | Cost EUR (excl. VAT) | Impact |
|---|---|---|---|
| Per-customer catalogue | 6-12 | 4,800 - 9,600 | Relevance |
| Real-time stock (ERP) | 10-20 | 8,000 - 16,000 | No surprise stockouts |
| Quick order/reorder | 5-9 | 4,000 - 7,200 | Basket +12% |
| Backorder handling | 4-8 | 3,200 - 6,400 | Loyalty |
| Contract prices/tiers | 6-11 | 4,800 - 8,800 | Protected margin |
| Mobile PWA app | 8-14 | 6,400 - 11,200 | Field ordering |
Real-time stock via ERP connection is the most structural item: without it, the portal shows false availability and breeds distrust.
Comparison: technical base
| Base | Entry cost EUR (excl. VAT) | Strength | Limit |
|---|---|---|---|
| Shopify Plus B2B module | 25,000 - 45,000 | Fast, robust | ERP stock to code |
| Medusa + custom front | 40,000 - 75,000 | Flexible, scalable | Senior dev required |
| Custom Next.js | 55,000 - 90,000 | Fits your processes | Longer timeline |
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For a wholesaler with a dominant ERP (prices and stock come from it), Medusa or custom avoid duplicating business logic. Shopify Plus fits if your rules stay standard.
Mini case study
Sofiane, manager of a food wholesaler in Amsterdam (18M EUR revenue, 310 hospitality customers), handles 620 orders/month, 65% identical reorders. Each phone order takes 9 minutes of order-desk time, i.e. 60 hours/month at 30 EUR loaded, i.e. 1,800 EUR/month. By shifting reorders to a portal at 54,000 EUR (delivered in 15 weeks), he moves 70% of those orders to self-service and saves 1,260 EUR/month of order-desk time. Payback in 43 months on time saved alone, cut to under 20 months once you add the +12% average basket seen on the online channel.
FAQ
What budget for a credible wholesale portal in 2026? From 22,000 EUR (excl. VAT) for a simple reorder portal with per-customer pricing. Real-time stock and ERP push the budget towards 40,000-90,000 EUR.
Is real-time stock essential? Strongly recommended: showing false stock destroys trust. If real-time integration is too heavy at first, a 15-minute sync costs 3,000 to 6,000 EUR (excl. VAT).
How long to go live? From 8 weeks for a simple reorder to 22 weeks for an advanced portal with EDI and mobile app. Your ERP data quality drives the timeline.
Will a portal compete with my sales reps? No: it absorbs repetitive reorders to free reps for advice and new accounts. The average basket typically rises by 8 to 15%.
Do I need a mobile app? Useful if your customers order on the shop floor or on the road. An installable PWA costs 6,400 to 11,200 EUR (excl. VAT) and avoids the cost of native iOS/Android development.
Let's scope your project. Specify your catalogue, number of trade customers and ERP: we will define the tier, stock mode and indicative budget. 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.
