The advanced step-by-step guide to starting your online marketplace in 2022 100 biggest online marketplaces raked in $2.1 trillion in sales in 2021. This makes up more than 65 percent of the total online sales generated in the whole year. (image from https://www.statista.com/chart/24405/top-5-online-market-places-by-gmv/) (image from https://www.oberlo.com/statistics/top-online-marketplaces-worldwide-by-gmv) In this vast online marketplace world, just the food