The verdict in three sentences
A B2B wholesaler in Hamburg invests 9,000 to 18,000 EUR (about 9,500-19,000 USD) in 2026 for a catalogue site with prices reserved for logged-in professionals. The heavy items are the 2,000-reference catalogue (4,500 EUR), per-client pricing (3,000 EUR) and the read-only ERP stock connection (5,000 EUR). This site is not an endpoint but a first step: once the catalogue and ERP are wired in, moving to real B2B e-commerce with online ordering becomes a simple extension.
What a B2B catalogue costs in 2026
A wholesaler's site must display a large catalogue, hide prices from anonymous visitors and reflect real stock. Each block prepares B2B e-commerce.
| Item | 2026 range (EUR) | Role |
|---|---|---|
| Core website | 9,000 - 18,000 | Structure, SEO, pro area |
| 2,000-reference catalogue | 4,500 | Search, filters, product pages |
| Per-client pricing (logged in) | 3,000 | Negotiated prices hidden from public |
| Read-only ERP stock connection | 5,000 | Real-time availability |
| Secure pro area | 2,500 | Client accounts, history |
| Cart quote request | 1,800 | Pre-order without payment |
A 11,000 EUR core with a catalogue (4,500 EUR), per-client pricing (3,000 EUR) and ERP connection (5,000 EUR) puts the project at 23,500 EUR, deliverable in 10 weeks.
Catalogue site or full B2B e-commerce: the trajectory
Many wholesalers hesitate to jump straight to e-commerce. The catalogue site is a controlled step that lays the groundwork.
| Criterion | Catalogue site | Full B2B e-commerce |
|---|---|---|
| Catalogue browsing | Yes | Yes |
| Price per logged-in client | Yes | Yes |
| Real-time stock (ERP) | Read-only | Read + reservation |
| Online ordering | Quote request | Cart + payment |
| Indicative cost | 23,500 EUR | 35,000 - 55,000 EUR |
| Timeline | 10 weeks | 16 - 20 weeks |
The catalogue site builds on the same foundations (catalogue, pricing, ERP). Moving to e-commerce replaces nothing: it adds cart, payment and stock reservation. Investing cleanly now avoids rebuilding everything later.
Mini case study
Karim, manager of a 25-employee industrial supplies wholesaler in Hamburg, handled 2,000 references via PDF catalogues emailed out and phone quotes. His reps spent 3 hours/day communicating prices and availability. After a 23,500 EUR site with a catalogue, per-client pricing and ERP connection, 60% of these requests move to self-service. Across 3 reps, that frees roughly 5.4 combined hours/day (3 x 3 h x 60%). At a loaded cost of 38 EUR/hour, that is 205 EUR/day, i.e. about 45,000 EUR/year of sales time recovered and redirected to prospecting. The site pays for itself in a little over six months.
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FAQ
Why hide prices from anonymous visitors?
Because in B2B, prices are negotiated per client and confidential toward competitors. Per-client pricing (3,000 EUR) shows the right price to each identified professional, while keeping the catalogue public for SEO.
Is a read-only ERP stock connection essential?
It is as soon as your clients order based on availability. Showing real-time stock avoids orders on out-of-stock products and cuts verification calls. Expect about 5,000 EUR depending on your ERP.
How long for a 2,000-reference catalogue?
Expect 10 weeks in total, a large part of which goes to structuring product data (categories, filters, pages). The quality of your product database strongly drives this timeline.
Can we move to e-commerce later?
Yes, that's precisely the point: the catalogue site shares the same foundations. Moving to B2B e-commerce (35,000 to 55,000 EUR) adds cart, payment and stock reservation without rebuilding the catalogue or ERP.
What maintenance budget should I plan?
Expect 120 to 250 EUR/month for security, updates, ERP sync and catalogue evolution. The reliability of the stock connection justifies this regular follow-up.
Let's scope your project. Tell us your catalogue volume, your current ERP and your indicative budget: we'll scope a catalogue site that prepares your B2B e-commerce. 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.
