Waarom je marketplace-listings niet converteren

You have a strong product, a good brand, and your Amazon and Bol.com accounts are running. Yet conversion stays behind what you know is possible. You win the Buy Box, but the click-to-order ratio hovers around 8%.

I see it with almost every client who comes to me.

The problem is rarely in the campaigns. It is in how your listing looks the moment someone opens the product page. And that is where it goes wrong, because most sellers, and honestly most agencies too, treat a marketplace listing as if it were a technical form. Fill in fields, cram in keywords, done.

But a listing is a sales page. And a sales page is UX.

The blind spot of 400 euro per hour in ad spend

At a client of mine, a Dutch outdoor brand with around 120 SKUs on Amazon DE and Bol.com, 14,000 euro went to Sponsored Products each month. The ROAS was 3.2, fine on paper. But the return rate sat at 23%.

When I went through the listings, I saw it immediately. The product photos showed the item against a white background. Neat, by the book. But the sizing was nowhere visually clear. The A+ Content consisted of two blocks of generic brand text that said nothing about the difference between the three sizes.

We did three things. Infographics with sizing right in the gallery. A comparison table in the A+ Content. And rewrote the title from keyword soup into a scannable structure that makes clear in 1.5 seconds what you are buying.

Result after eight weeks: return rate down to 14%. Conversion from 8.1% to 12.7%. And we lowered the ad spend by 3,000 euro per month, because the organic ranking rose thanks to the better conversion.

That is not rocket science. That is looking at a listing the way a customer looks at it.

Why 2026 is the turning point for Dutch sellers

This year three things happen at once that fundamentally change the Dutch market.

Amazon is investing 1.4 billion euro in Dutch logistics and infrastructure through 2027. Same-day delivery becomes the norm, not the exception. At the end of 2025 more Dutch people searched for "Amazon" than for "Bol.com," for the first time ever.

Bol.com is responding. The Groeibeloning programme, going live on 1 July 2026, gives commission discounts to top sellers who hit personal revenue targets. Sounds attractive, but it is really a signal: Bol wants you to invest more in their platform. At the same time Bol.com is opening its doors to non-EU sellers. That means more competition in every category.

And then EU regulation. From 1 July 2026 the 150 euro exemption for import shipments disappears. Every B2C order from outside the EU gets a 3 euro customs charge. Temu and Shein get more expensive. That is good news for Dutch brands, if you are ready for it.

The strange thing is: most sellers I speak with are busy with operational details. Which fulfilment option, which ad budgets. But nobody asks the strategic question: how do I make sure my listings work optimally on both platforms with minimal double effort?

Multi-marketplace is not copy-paste

One of the most common mistakes I come across: companies that literally copy their Bol.com content to Amazon, or the other way around. They are fundamentally different platforms with different algorithms, different buyers, and different expectations.

On Bol.com a longer product title works because the platform shows titles in full in search results. On Amazon your title has to stay under 200 characters and the first 80 characters already have to convince on mobile, because 72% of Amazon traffic is mobile.

On Bol.com your service level (Bol.com Stars) partly determines your visibility. On Amazon the Buy Box is a black box where price, fulfilment method, and account health all weigh in.

At a client in the beauty sector, around 85 products, annual revenue near 2 million euro, we set up a separate content strategy per platform. The same product data as the source, but adapted per platform on format, tone, and visual emphasis. The Bol.com conversion rose 18% in two months. On Amazon DE, where they had just started, they reached the Buy Box on 67% of their assortment within three months.

That is the advantage of working with someone who knows both platforms from the inside.

What a freelance marketplace specialist does differently than an agency

I work as a freelance e-commerce manager, and I will be honest about why that works better for some companies than an agency.

An agency puts a junior on your account who follows the playbook. Research keywords, set up campaigns, a monthly report with green arrows. That is fine if you are just starting. But if you already run 1 million euro or more in revenue on marketplaces and you want to reach 3 million, you need someone who makes strategic choices.

Should you use FBA or an external 3PL now that Bol.com is rolling out an external fulfilment network? Should you prioritise Amazon DE over Amazon NL because the search volume is ten times higher? What is the impact on your margin if you start chasing Groeibeloning targets?

Those are not operational questions. Those are business questions. And you do not answer them with a dashboard.

As an interim e-commerce manager I sit in your team temporarily. I know your margins, your return rates, your seasonal patterns. I look not only at your marketplace data, but also at how your customer experiences your product page. Where does someone drop off? Why does someone scroll on to the next offer?

That UX perspective is missing at 90% of marketplace service providers. And it is exactly there that the conversion gain sits.

The numbers that matter

After fifteen years in e-commerce I notice that most companies steer on the wrong metrics. Impressions, clicks, ROAS. Those are lagging indicators.

The metrics I look at first with a new client:

Session-to-order ratio per product, not per campaign. If you have ten products that get 80% of your traffic but convert below average, you do not have a traffic problem. You have a listing problem.

Return rate per SKU, set against the category benchmark. Amazon now actively penalises you if your return rate is too high. That "frequently returned item" badge is a death sentence for your conversion.

Buy Box percentage versus your actual price gap. Many sellers think they lose the Buy Box on price, while it is actually down to their fulfilment speed or account health.

When I start with a client, I first do an audit of two to three days. Not a sixty-page report. A concrete list: these are your three biggest leaks, this is what it costs to close them, and this is the expected effect on your revenue within ninety days.

When do you hire a marketplace specialist?

Not every organisation needs an external e-commerce consultant. If your team knows the platforms, understands the data, and has the capacity to optimise, do it yourself.

But if you recognise one of these situations, it pays to hire someone who does this daily.

You run more than 500,000 euro on marketplaces but your conversion rate has been dropping for two quarters. You want to expand from Bol.com to Amazon (or the other way around) and you have no idea where the margins sit. Your ad spend grows faster than your revenue. Or your team is strong in marketing but nobody speaks fluent "marketplace."

In those cases a good specialist pays for itself within two months. Not by selling more, but by selling smarter. Better conversion, lower returns, sharper margins.

The next twelve months

Amazon is going full throttle in the Netherlands. Bol.com will defend itself with loyalty programmes and stricter partner requirements. EU regulation makes the playing field fairer for local brands, but only if you have your operation in order.

The sellers who will make the difference in 2026 are not the ones with the biggest ad budget. They are the sellers who understand that a marketplace listing is a piece of user experience, and who optimise every element of that experience as if their margin depends on it.

Because it does.