Research

Data and analysis about online marketplaces, sellers, software and service providers.

Tools & Services

Roundups and comparisons of the best ecommerce software and services.

Amazon FBA Fee Refunds: How to Get Your Money Back

You shouldn’t be paying for Amazon’s mistakes. Here’s how to check if you are paying more FBA fees you need to, and get the refunds you are owed.

By Pete Thompson

Amazon FBA Fee Refunds: How to Get Your Money Back

Sellers, Stores & Products

Detailed data on the largest marketplace sellers and most successful products.

The World’s Top eBay Sellers 2021

The top 1,000 eBay sellers worldwide, updated for 2021, including country lists for the US, UK, China, Germany and Australia.

By Andy Geldman

The World’s Top eBay Sellers 2021

Get the latest news, offers, downloads, webinar invites and more.

All in Research

Online Marketplaces in the USA: Amazon is Not The Only Show in Town

Amazon is the leading online marketplace in the US, but eBay remains strong, Walmart.com is growing and niche players are thriving.

By Andy Geldman


Online Marketplaces in China: The Land of The Giants

Online retail sales in China make up a third of total global ecommerce, but just three companies make up 89% of the total Chinese ecommerce market.

By Andy Geldman


Online Marketplaces in Japan: Amazon, Rakuten… And The Rest

Ecommerce in Japan is led by two brands: Amazon and Rakuten. Four other marketplaces are popular, but they lag far behind the leaders.

By Andy Geldman


Online Marketplaces in the UK: Amazon and eBay Dominate

We take a look at the top 12 online marketplaces in the UK, including global ecommerce players, major European sites and niche British brands.

By Michael Burns


The World’s Top Online Marketplaces 2021

Find out which online marketplaces rule their countries, regions and product categories in our definitive list of marketplaces worldwide.

By Kate Merton


The World’s Top eBay Sellers 2021

The top 1,000 eBay sellers worldwide, updated for 2021, including country lists for the US, UK, China, Germany and Australia.

By Andy Geldman


Online Marketplaces in the Middle East: It’s Only Just Getting Started

Ecommerce in the Middle East is something of a paradox. Internet use is high and consumers have money to spend, but the ecosystem lags behind.

By Andy Geldman


The Best Selling Items on eBay in 2021

Discover which items are selling the most on eBay, across 15 different categories from Baby and Business to Travel and Video Games.

By Paul Maplesden


Amazon FBA Fee Refunds: How to Get Your Money Back

You shouldn’t be paying for Amazon’s mistakes. Here’s how to check if you are paying more FBA fees you need to, and get the refunds you are owed.

By Pete Thompson


The World’s Top Amazon Marketplace Sellers 2021

The top 1,000 Amazon sellers worldwide updated for 2021, including country lists for every Amazon marketplace from the US to Australia.

By Andy Geldman


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