PRESS RELEASE: SEPTEMBER, 2025

OnBuy Expands to 12 European Markets, Inviting Retailers to Join E-commerce Shake-Up

23 September 2025

British e-commerce powerhouse opens retailer registration and websites across the EU
OnBuy seeks thousands of new sellers to join platform as it accelerates international growth
308% overall European sales growth and 40%+ Compound Monthly Growth Rate highlights scale of demand for an alternative to global giants

London, September 2025 - OnBuy, the UK’s fastest-growing online marketplace, has launched across 12 European markets, opening registration for retailers in Germany, France, Spain, Italy, the Netherlands, Belgium, Austria, Greece, Finland, Portugal, Ireland and Slovakia.

The expansion cements OnBuy’s status as one of Europe’s fastest-scaling tech businesses, offering retailers a fairer, more profitable way to sell online and giving consumers a credible alternative to US giants Amazon and eBay.

The move builds on a landmark year for OnBuy, which earlier acquired iconic British retailer Comet. The acquisition highlights the company’s ambition and growing presence in UK retail.

Early signs point to huge demand. OnBuy’s European beta activity has already delivered 308% sales growth and a 40%+ compound monthly growth rate, highlighting the scale of opportunity for sellers who join now. Expansion into a further 8 markets is already underway, putting OnBuy on track to be live in 20 countries by the end of 2025.

The company forecasts an additional £100m in Gross Merchandise Value (GMV) and at least 5 million new customers from its EU rollout in the next 12 months, with eyes on a total GMV of £1bn within the next 3 years.

Cas Paton, CEO and Founder of OnBuy, said:

“Retailers across Europe are calling out for a marketplace that truly supports them. OnBuy is different - we don’t compete with our sellers, we champion them. Our model creates higher margins for retailers, more choice for customers, and a level playing field that the industry has been missing.

Europe’s e-commerce market is enormous and the appetite for change is clear. With our growth momentum and seller-first approach, we’re building a challenger marketplace that’s reshaping how retailers do business.”

A key driver of OnBuy’s success is its industry-first cashback programme. As the only marketplace worldwide to offer customers instantly redeemable cashback on every purchase, which can be spent immediately onsite or withdrawn, OnBuy has redefined loyalty. In the UK, this model has delivered over 50% repeat purchase rates, driving stronger sales and customer retention for retailers.

To lead its continental expansion, OnBuy has appointed Marie Dauphin as Head of Sales, who is building localised teams to recruit thousands of new retailers and establish strategic partnerships across logistics, affiliates and e-commerce platforms.

For retailers, the benefits are clear:

Fast access to millions of European shoppers
Clear fees and transparent policies
Automated tax engine for easy cross-border selling
Cashback-driven loyalty that boosts repeat sales

Retailers who want first-mover advantage on Europe’s fastest-growing marketplace can register today: Sell with OnBuy

– ENDS –

Media Contact: press@onbuy.com

About OnBuy

OnBuy is Britain's fastest-growing online marketplace and the first in the world to offer customers instantly redeemable cashback on every purchase.

Founded in the UK in 2016 by Cas Paton, OnBuy has established itself as a leading tech challenger brand positioned to help businesses thrive. It doesn’t hold stock and never competes with its retailers, while providing fair fees, transparent policies, and powerful tools for cross-border expansion.

With millions of products spanning categories such as electronics, toys, beauty, and home & garden, and thousands of trusted sellers on the platform, OnBuy is rapidly expanding across Europe, delivering strong value to customers while transforming the online marketplace landscape.

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