The verdict in three sentences
For an electrical supplies wholesaler in Rotterdam with thousands of SKUs, the best SEO provider is the one that can structure a catalogue by product family in Dutch and English, not the one that writes the most blog posts. In 2026, a specialist B2B ecommerce agency ranks first, followed by a hybrid of consultant plus in-house product editor. Measure everything in installer orders and quote requests, tracked weekly.
What a large electrical catalogue needs
Picture a wholesaler near the Waalhaven with a trade counter and a webshop, selling cable (installation, armoured, data), distribution boards, circuit breakers, wiring accessories, EV chargers and lighting. Its buyers are installers, contractors working on housing projects in Rotterdam Zuid, facility managers at the port and solar installers. They search by article number, by spec or by need, in Dutch and English: installatiekabel prijs, aardlekschakelaar 40A, YMvK kabel, armoured cable supplier Netherlands.
The catalogue needs family level structure, consistent attributes (section, standard, application, pack size, stock) and clean product data, often fed from ETIM classifications used across the Dutch installation sector.
| Item | 2026 market ballpark | Comment |
|---|---|---|
| Monthly SEO retainer | 2,000 to 6,000 EUR | Depends on catalogue size and languages |
| Technical audit | 4,000 to 12,000 EUR | Indexing, faceted navigation, duplicates |
| Catalogue SKUs | 5,000 to 30,000 | Prioritise the 20 % that drive sales |
| Target queries | 40 to 100 across Dutch and English | Cable, protection, accessories, EV, lighting |
| Product families | 15 to 30 | One optimised category page each |
| Quote requests and trade sign ups | Tracked weekly | Forms, phone, account requests |
2026 ranking: agency, consultant or in-house
The ranking uses stable criteria: 12 month total cost, speed, reversibility and support. No agency is named, apart from Kolonell, listed as one option with its real prices.
| Rank | Provider type | 12 month total cost (ballpark) | Time to first results | Reversibility | Support | Best for |
|---|---|---|---|---|---|---|
| 1 | Specialist B2B ecommerce agency | 35,000 to 80,000 EUR | 4 to 7 months | Good if contracted | Strong, Dutch speaking | Over 10,000 SKUs |
| 2 | Consultant plus in-house product editor | 45,000 to 70,000 EUR (fees and salary) | 5 to 8 months | Very good | Mixed | 5,000 to 15,000 SKUs |
| 3 | Rotterdam full service generalist agency | 30,000 to 70,000 EUR | 6 to 10 months | Average | Excellent, on site | Wholesalers also rebuilding the webshop |
| 4 | Full internal team | 90,000 EUR and up (two salaries plus tools) | 9 to 12 months | Full | Internal | Multi branch groups |
| 5 | Nearshore agency, for example Kolonell | 1,830 to 6,410 EUR (Kolonell's prices) | 5 to 8 months | Good, accounts in your name | Remote, English and French | English pages, product copy support |
Kolonell's SEO prices are 152 EUR a month for Essentiel, 305 EUR for Growth and 534 EUR for Premium (100,000, 200,000 and 350,000 FCFA). For a Dutch wholesaler it fits best on English language pages, with Dutch copy reviewed by a native editor.
The catalogue platform matters as much as the provider
A good SEO provider cannot fix a platform that fights you. These are common public options for a large electrical catalogue.
| Platform | Strengths for a wholesaler | Watch points | Cost |
|---|---|---|---|
| Magento Open Source (Adobe Commerce) | Handles very large catalogues and B2B pricing | Needs experienced developers | Open source version free, enterprise edition licensed |
| Shopify | Fast to launch, strong apps | B2B features depend on plan | Monthly subscription, public price varies by plan |
| WooCommerce (WordPress) | Flexible product pages, many SEO plugins | Hosting must scale beyond 10,000 SKUs | Free software, hosting and plugins extra |
| Odoo | Direct link to stock and invoicing | SEO settings need care | Community edition free, enterprise by subscription |
| Custom build | Structure tailored to your families | Higher upfront cost | Quoted per project |
When stock lives in an ERP, syncing it to the webshop avoids showing out of stock items, a common trust killer for installers who need the part today.
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Illustrative example, fictional persona: Jeroen, managing director of an electrical wholesaler in Rotterdam, hires a specialist agency at 4,000 EUR a month with an 8,000 EUR audit, or 56,000 EUR in year one.
Online quote requests and trade sign ups rise from 30 to 90 a month after eight months. At a 25 % conversion rate and an average first order of 2,400 EUR at 20 % margin, the 60 extra requests bring 15 orders and about 7,200 EUR of margin a month, before repeat orders. The annual budget is recovered early in year two, faster once repeat orders from the new trade accounts are counted.
FAQ
What should a Rotterdam electrical wholesaler budget for SEO?
The 2026 market ballpark is 2,000 to 6,000 EUR a month, plus 4,000 to 12,000 EUR for an audit. Catalogue size and the number of languages drive the fee.
Do we need to optimise every SKU?
No, start with the 20 % that generate 80 % of sales, often 1,000 to 3,000 products. The rest can follow a strong template fed by ETIM attributes.
Agency or in-house team?
A full internal team costs 90,000 EUR or more a year and takes 9 to 12 months to deliver. The hybrid model works well between 5,000 and 15,000 SKUs.
Does showing trade prices online help SEO?
Showing a list price or a from price usually lifts clicks from Google. If prices vary by account, show stock status and a quick quote button at least.
How should we measure results?
Track every form, account request and phone call in Google Analytics, with a weekly report. A realistic target is 60 to 100 requests a month after eight months.
Get found by the buyers already searching for you. Start with a visibility audit at 100,000 FCFA (about 152 EUR, credited against setup if you start within 30 days), then switch on the Traffic Engine plan that fits your catalogue, with a weekly report on quote requests. Traffic Engine. 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.
