Cross-border sales usually bring two associations: greater reach and… greater chaos. Different languages, different rates, different shopping habits—plus yet more integrations and updates. There’s a better way. The Base + OnBuy marketplace duo was built to scale your sales across 21 European markets.
What is OnBuy and why is it worth it?
OnBuy is one of the fastest-growing marketplaces in Europe. Recognized by Deloitte, the Financial Times and the Sunday Times for its dynamic growth, the platform is rapidly expanding across the continent. With over 10 million monthly visits and 6 million buyers in the UK alone, OnBuy gives sellers a huge opportunity to reach new customers.
Access to more customers
OnBuy brings in millions of engaged buyers, and 51% of GMV comes from returning customers. That means a loyal audience that loves to buy.
Profitable expansion
A transparent, competitive fee structure lets you grow without hidden costs. Sellers choose from affordable subscription plans and pay commission only when a sale is made.
Less competition
OnBuy doesn’t compete with you by pushing its own private-label brands. Your listings gain better visibility and higher conversion as a result.
Higher customer satisfaction
OnBuy is the only marketplace that rewards buyers with cashback on every order. This benefit encourages repeat purchases and meaningfully boosts conversion—without you constantly shaving margin with extra discounts. Returning customers spend up to 89% more.
Sell across Europe from a single panel
The biggest advantage of the new integration is its international reach. Base.com officially supports selling on OnBuy in key European markets: Austria, Belgium, Czechia, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Spain, Sweden, Switzerland, and the United Kingdom.
What does that mean? No more opening separate accounts and manually translating listings. The Base.com–OnBuy integration automates your expansion:
-
Automatic translations: Break language barriers. The system ensures your listings are understandable to local customers, instantly boosting their appeal.
-
List to multiple markets in one click: Want to sell the same product in Germany, France and Spain? A few clicks and your offer appears across your selected OnBuy markets.
-
Centralized management: All orders—no matter the country—flow into one familiar Base.com panel. Full control, zero chaos.
Instead of fighting technology, focus on growing your business.
OnBuy tools that help you sell
AI-powered categorisation
Our system automatically matches your product data to marketplace requirements
Listed products
See all live listings, update when needed & sync across all channels
Pricing & repricing tools
Stay competitive with dynamic pricing rules & automation that helps win more orders
Level up with the OnBuy professional subscription & drive sales through your store
- Display all products: Allow customers to shop your entire product range in one convenient location
- Create custom collections: Build up to three signature product collections, featuring 50 listings each, and promote directly from your store.
- Store search function: Help customers discover more of what you sell and drive visibility across your listings
- Exclusive product pages: All listings on your store go to exclusive product pages – no comparison table and no competition.
Base.com + OnBuy integration – your route to cross-border
Forget manual data copying, stock policing and logging into multiple systems. The two-way integration is designed to simplify your work to the max:
-
Lightning-fast listing: Publish thousands of products directly from Base.com. Whether you use your own warehouse, Base.com’s warehouse, wholesaler feeds or an external ERP—you have full flexibility.
-
Real-time synchronization: Stock levels and prices update automatically across all OnBuy markets. Avoid overselling and stay competitive with dynamic pricing rules.
-
Order handling in one place: All OnBuy orders go straight to the Base.com Order Manager. Fulfil them directly in the panel with the Packing Assistant, or automatically pass them on to your store or ERP.
-
Process automation: Pass tracking numbers, generate invoices, create shipments, and use automatic actions to take care of repetitive tasks. You save time and minimize errors.
-
Unlimited accounts: Running multiple companies or brands? Connect any number of OnBuy accounts with no extra Base.com subscription fees.
What to sell on OnBuy?
OnBuy spans 16 main categories. With millions of active listings, your edge is a competitive price and a sharp product selection.
How to start selling on OnBuy?
OnBuy is rapidly expanding across Europe. Get in now to benefit from first-mover advantage in new markets, lighter competition at launch, and the platform’s larger marketing budgets. It’s the perfect moment to diversify sales and build a new revenue stream. To start selling, you’ll need:
- A link to your current selling platform
- At least 50 product reviews from the last 12 months (4/5 stars or higher)
- GTINs (Global Trade Item Numbers) for your products (with some exemptions)
- A valid business bank account in the relevant currency
- A returns solution for each country you sell in
- Compliance with OnBuy’s product listing and quality guidelines
Once approved, you can start listing products and selling within 48 hours. The process is simple:
-
Go to the OnBuy seller registration page.
-
Fill out the online form.
-
Attach the required documents.
-
After approval, start listing products.
-
Connect the OnBuy integration in Base.com and configure category mapping, prices, and stock.
Ready to expand your reach?
OnBuy is a fast-growing marketplace that puts the seller first. Base.com brings order to your operations so you can replicate successful playbooks from country to country. Together they lift the cross-border load off your shoulders, leaving what matters most: product, price, and customer service. Everything else runs in the background.
