The verdict in three sentences
When 900 suppliers email product sheets, certificates and price lists as Excel files, the hidden cost is a whole team busy re-keying and chasing. A custom supplier extranet costs EUR 70,000 to 140,000 excluding VAT, including EUR 15,000 to 30,000 for the ERP connector, over 5 to 7 months. The most tangible gain is freeing about 2 FTE of buying assistants and getting new products on shelf faster.
What the extranet actually replaces
Today, a supplier listing a new product sends a file with 40 to 80 columns: EAN, logistics dimensions, pallet configuration, allergens, origin, cost price, discount terms. Buying assistants check, correct, chase missing certificates (IFS, BRC, organic), then re-key into the ERP. Average listing time often exceeds 3 to 4 weeks.
| Workflow step | Actor | Automatic check |
|---|---|---|
| 1. Product sheet entry | Supplier | Valid EAN, mandatory fields, consistent units |
| 2. Certificates and spec sheets upload | Supplier | Expiry date, PDF format, recognised body |
| 3. Quality approval | Quality team | Allergens, EU 1169/2011 labelling, compliance |
| 4. Buying and price approval | Buyer | Gap vs reference price, target margin |
| Push to ERP | Automatic | Item, supplier code and price creation |
This 4-step approval workflow typically brings listing time down to 7 to 10 days.
Detailed 2026 budget
2026 estimates for a mid-sized agency or IT services firm in the Netherlands, or a mixed Dutch and offshore team.
| Item | 2026 range (EUR, ex VAT) | Comment |
|---|---|---|
| Discovery, product data mapping | 8,000 to 14,000 | Buying, quality, logistics, IT workshops |
| Supplier portal (accounts, profiles, dashboard) | 12,000 to 22,000 | Multiple users per supplier |
| Product sheet forms and bulk import | 12,000 to 25,000 | Web entry plus validated CSV or Excel import |
| 4-step approval workflow | 10,000 to 20,000 | Roles, comments, history |
| Document management and expiry alerts | 5,000 to 10,000 | IFS, BRC, organic certificates |
| ERP connector (SAP, Microsoft Dynamics, LS Retail) | 15,000 to 30,000 | Item and price creation |
| Security, QA, pilot rollout | 8,000 to 19,000 | 30 pilot suppliers |
| Total project | 70,000 to 140,000 | 5 to 7 months |
| Maintenance retainer | 2,000 to 4,000 per month | Changes, level 2 support, hosting |
The most variable item is bulk import: some suppliers have 2,000 SKUs and will never type them in by hand. A mandatory Excel template with validation on import is essential.
Custom build or off-the-shelf PIM?
| Criterion | Off-the-shelf PIM or supplier platform | Custom extranet |
|---|---|---|
| Initial cost | EUR 30,000 to 80,000 of configuration | EUR 70,000 to 140,000 |
| Annual cost | EUR 40,000 to 120,000 in licences | EUR 24,000 to 48,000 in maintenance |
| Fit with internal workflow | Partial | Full |
| Time to launch | 3 to 5 months | 5 to 7 months |
| Ownership of code and data | Vendor | Retailer |
Over 5 years, custom often works out cheaper once licences exceed EUR 50,000 a year, provided the workflow is stable and buying has a committed sponsor.
Mini case study
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Sanne, purchasing director of a 120-store chain headquartered near Amsterdam, has 5 buying assistants who spend about 40 % of their time re-keying and chasing. The extranet frees 2 FTE, roughly EUR 100,000 of annual loaded cost redeployed to negotiation and sales analysis. The project is budgeted at EUR 110,000 with a EUR 3,000 monthly retainer. Year one costs EUR 146,000, following years EUR 36,000. Break-even comes during year two, before counting new products reaching shelves 2 weeks earlier.
FAQ
Will suppliers really use it?
Yes, if the retailer makes it mandatory for every new listing. Plan 30 pilot suppliers, then a switch in 3 waves over 4 months, with a 2-hour daily helpline.
Can it handle food and non-food product sheets?
Yes, with templates per product family. Each additional template costs EUR 2,000 to 5,000 depending on the number of attributes.
How are price updates handled?
The supplier uploads a new price list, the extranet computes the percentage change and alerts the buyer above a threshold, for example 3 %.
Where is the data hosted?
EU hosting, included in the retainer, costs EUR 300 to 800 a month depending on document volume.
Can we add tenders and annual negotiations later?
Yes, in phase 2, for EUR 25,000 to 50,000, reusing the supplier accounts already created.
Let's scope your project. Share your number of suppliers, your ERP and your current listing process, and we will propose a scope, a budget and a rollout plan in waves. 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.
