The hidden costs of fragmented e-commerce multiply in Europe

The short of it 

• Europe runs on marketplaces. Marketplaces drive roughly 61% of European e-commerce GMV and 70% of the region’s €358.7 billion cross-border market. The average UK brand already sells on four third-party marketplaces, and two-thirds plan to add more within a year.
• Most European brands now run hybrid selling models, with wholesale (1P) alongside marketplaces (3P) and, increasingly, dropship. Managing each side separately doubles the work and splits product data and brand messaging across countries.
• In Europe, marketplaces pull listings with incomplete product data. The General Product Safety Regulation requires them to remove listings that lack safety and traceability information.

Centralise inventory across the EU and track profit down to the product, returns and all. One operational layer turns each new market into an endpoint instead of a rebuild.

A US brand reaches most of its customers through a handful of channels. A European brand faces dozens of national markets, each with its own leading marketplaces, language, currency, VAT rules, and consumer law. We covered the five hidden costs of fragmented e-commerce from a US vantage point. Europe multiplies every one of them. Solve them here and you win more markets.

Why fragmentation compounds in Europe

No single channel mix covers the region. Marketplaces drive about 61% of European e-commerce GMV¹ and 70% of Europe’s €358.7 billion cross-border online market.² The lineup changes at every border: Otto and Kaufland lead in Germany, Cdiscount in France, bol in the Benelux, Allegro in Poland, Zalando and About You in fashion across the region. Amazon alone runs ten separate European storefronts, each with its own catalogue, reviews, and performance metrics. Rithum’s State of 3P Commerce research puts the average UK brand on four third-party marketplaces, with two-thirds planning to add more within a year.⁶ So the average European brand sells on more marketplaces than its US counterpart.

Every channel you add in the US adds one more set of listings and one more fee structure. Every market you add in Europe multiplies those by a language, a currency, a VAT registration, and a compliance regime. The costs below will look familiar if you read the US version. The multipliers are new.

Hidden Cost 1: Overselling, stockouts, and broken size curves

A stockout costs you sales while it lasts and visibility after it ends. Availability rate feeds marketplace ranking, not only conversion. About You and Zalando track it, and strong availability keeps you eligible for sales campaigns.

In fashion especially, depth decides whether a listing sells. A product can show as in stock while its most popular sizes are gone, and shoppers who can’t find their size move on. A broken size curve leaves the listing technically live and commercially dead.

Now multiply by geography. Out-of-stocks and overstocks cost retailers $1.73 trillion a year.³ European brands spread stock across more channels, so a sync lag of a few hours can oversell a SKU in one market while another shows it empty. In Europe you can take that hit ten times at once, and that is Amazon alone.

Sync inventory EU-wide and ten storefronts become one stock decision. Rithum’s inventory management does exactly that.

Hidden Cost 2: Manual work, duplicated across wholesale, marketplace, and dropship channels

Most European brands now run hybrid models: wholesale alongside marketplaces and, increasingly, dropship. The same product lines live in both worlds, yet separate teams manage them in separate ways. Wholesale runs on spreadsheets and manual file exchanges with retailers; marketplace teams automate more.

That split is where the cost hides. The same work happens twice, and product data and brand messaging drift apart across countries. Leading retailers and brands are starting to automate their wholesale listings too. One automation layer keeps the catalogue consistent all the way down the long tail. Boardriders proves the model: the company behind Quiksilver and Billabong runs both its wholesale and marketplace operations through Rithum and grew from 140 to 190 channels in a single year, launching across European marketplaces from Zalando to La Redoute.

All of it multiplies: teams maintain product descriptions in five or more languages and prices in several currencies, then rebuild every promotion for each storefront. Rithum client Trotec grew GMV 20% after automating its channel operations.

Hidden Cost 3: Listings that don’t survive comparison

More channels bring more comparison: European consumers cross-check products across marketplaces and sellers, so every PDP difference is on display. Many brands cite exactly this as a reason for going hybrid.

Localisation raises the bar further: accurate translations and correct sizing logic still trip up a lot of brands. Content gaps feed the returns rate in a region where returns already run high, and the EU’s fourteen-day right of withdrawal turns every mismatch into a statutory return.

Consumers are one audience for your product content. Marketplaces and regulators are the other. Since 13 December 2024, the General Product Safety Regulation has required consumer product listings to display manufacturer details, an EU Responsible Person for non-EU sellers, and relevant safety information.

Marketplaces must remove listings that fall short, and enforcement now reaches labelling and customs checks.⁴ Germany and France add extended producer responsibility rules on top: marketplaces block sellers without valid packaging registration numbers. In the US, a weak listing converts poorly. In Europe, it can come down. Get the content layer right and you protect the listing and win the comparison in one move.

Hidden Cost 4: Margin blindness across markets

Returns run higher in Europe and stay higher, especially in fashion and cross-border commerce. Assess profitability beyond GMV and count returns from the start.

Many brands still review performance at channel or country level and never see how returns hit margin at product, size, or fulfilment-model level. The economics shift under the same SKU as it crosses borders, and fulfilment costs and average return rates drive most of the swing. Fulfilment method counts too: some Eastern European markets run heavily on cash on delivery, others favour click and collect, so the model that wins one market can misfire in the next. A product might be more profitable in Spain than in Germany even if sell-through is higher in Germany, because of logistics costs and return rates.

Measure profitability at the product level, returns included, and you can set assortment and channel strategy market by market.

Hidden Cost 5: The markets you never enter

The biggest cost in Europe is the expansion you skip. Zalando generates 69% of its marketplace GMV outside Germany;⁵ demand crosses borders whether or not your operations do. Brands that make market entry routine claim Allegro, Kaufland, and ManoMano while rivals stall at two or three channels, rebuilding integrations and compliance registrations by hand. Rithum’s research found brands need seven weeks on average to bring a single new marketplace live.⁶

From fragmented to connected

None of these costs appears on a budget line. They surface as flat margins in a growing business, and in Europe they surface fast, because every inefficiency multiplies across markets. The brands winning the region run one operational layer: they sync inventory EU-wide across every storefront, localise product content from a single source, put wholesale, marketplace, and dropship workflows on shared automation, and report profitability at product, size, and fulfilment-model level with returns priced in. Stitching it together from point tools rebuilds the fragmentation you started with.

Rithum is the commerce operations platform brands and retailers use to keep product data, pricing, and availability accurate everywhere they sell. It builds that layer for brands and retailers. Weighing European expansion, or already carrying its hidden costs? Talk to one of our commerce experts.

Frequently asked questions

What are the hidden costs of fragmented e-commerce in Europe?

Five costs compound across European markets: overselling and broken size curves from unsynced inventory, manual work duplicated across wholesale, marketplace, and dropship channels, listings that lose comparisons or get delisted under EU rules, margin blindness from country-level reporting, and the markets a brand never enters. Each one multiplies with every added language, currency, VAT registration, and marketplace.

What share of European e-commerce runs through marketplaces?

Marketplaces drive about 61% of European e-commerce GMV and 70% of the region’s €358.7 billion cross-border online market, and the leaders differ from country to country.

What is the General Product Safety Regulation (GPSR)?

Regulation (EU) 2023/988, in force since 13 December 2024, sets the EU’s product safety rules for consumer goods. It requires listings to display manufacturer details, an EU Responsible Person for non-EU sellers, and relevant safety information, and it requires marketplaces to remove listings that fall short.

Why do the same products earn different margins across European markets?

Fulfilment costs and average return rates drive most of the difference, and fulfilment methods vary too: some Eastern European markets run heavily on cash on delivery, others favour click and collect. The model that wins one market can misfire in the next. The same SKU can be more profitable in one market than another even when sell-through is higher elsewhere, and reading performance only at channel or country level hides the swing.

How does Rithum help brands sell across European marketplaces?

Rithum is the commerce operations platform brands and retailers use to keep product data, pricing, and availability accurate everywhere they sell. For brands and retailers selling across Europe, it syncs inventory EU-wide across storefronts, localises product content from a single source, automates wholesale, marketplace, and dropship workflows together, and reports profitability at product, size, and fulfilment-model level with returns included.

Sources

1. https://ecommercenews.eu/marketplaces-account-for-61-of-european-ecommerce/
2. https://www.cbcommerce.eu/blog/2025/10/16/sixth-edition-of-the-top-100-cross-border-marketplaces-europe-report-european-cross-border-e-commerce-reaches-new-heights/
3. https://www.ihlservices.com/news/analyst-corner/2025/09/retail-inventory-crisis-persists-despite-172-billion-in-improvements/
4. https://eur-lex.europa.eu/eli/reg/2023/988/oj
5. https://ecdb.com/blog/cross-border-shares-of-european-countries/5098
6. https://www.rithum.com/resources/the-state-of-3p-commerce-2024-report/