What are the selling fees on OnBuy?

OnBuy charges category-based commissions of 5–9% plus payment processing fees. Monthly subscriptions start from £19/month (Standard), £39/month (Professional), or £99/month (Elite) with increasing features and lower fees at higher tiers.

Does OnBuy sell its own products?

No. OnBuy is a pure marketplace that never sells its own products or competes with its sellers. This is a core company principle, unlike Amazon which has extensive private-label brands.

Can I sell on OnBuy from outside the UK?

Yes, EU-based sellers can sell on OnBuy. You need to be able to ship to UK addresses and comply with UK import regulations. Post-Brexit, sellers shipping from the EU may need to handle customs declarations.

How does OnBuy compare to Amazon UK?

OnBuy offers lower fees (5–9% vs 8–15%), no platform competition, and less seller competition. Amazon UK has a much larger customer base and FBA fulfillment. Many sellers use both platforms to maximize UK sales.

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Sell on OnBuy

The UK's fastest-growing challenger marketplace

8M+

Monthly Visitors

35M+

Product Listings

United Kingdom

Country

2016

Founded

Last updated: March 2026

Overview

OnBuy is the UK's fastest-growing online marketplace, founded in 2016 by entrepreneur Cas Sheridan with a mission to create a fairer marketplace for both sellers and buyers. With over 8 million monthly visitors and 35 million product listings, OnBuy has established itself as a credible alternative to Amazon and eBay in the UK market. The platform's key differentiator is its commitment to never competing with its own sellers — OnBuy does not sell its own products, ensuring that every sale goes through a third-party seller without platform cannibalization.

OnBuy's fee structure is among the most competitive in the UK marketplace landscape. Sellers pay category-based commissions of 5–9% (significantly lower than Amazon's 8–15% or eBay's 10–13%), plus a payment processing fee. There is a monthly subscription starting from just £19/month for a Standard plan, with higher tiers offering additional features. This transparent, seller-friendly approach has attracted over 5,000 sellers and generated significant media attention as OnBuy positions itself as the ethical alternative to marketplace giants.

For cross-border sellers targeting UK consumers, OnBuy offers a lower-competition environment where good products can achieve visibility faster than on Amazon or eBay. The platform has invested in infrastructure, including a new technology platform rebuild and international expansion plans. OnBuy's buyer protection program, transparent pricing, and growing customer base make it an increasingly attractive channel for sellers who want to diversify beyond Amazon UK and eBay UK, particularly in categories like electronics, home and garden, and health and beauty.