For UK shoppers, online retail is driven by two main factors: convenience and price. According to research from Salsify, 62% of consumers cite convenience and 61% cite better pricing as top reasons for shopping online. But navigating two giants like Amazon and eBay — each with its own pricing dynamics, seller ecosystems and delivery models — can be challenging. This is where understanding how to choose an online marketplace becomes crucial. A platform like WEM offers a free marketplace for shopping and travel with strong UK, EU and US coverage, plus a free browser extension, helping you find the best indicative prices for product discovery before committing to a purchase.
This guide breaks down the key factors to consider when comparing Amazon and eBay, showing you how to find genuine value and make informed decisions with the help of powerful comparison tools.





