The online marketplace gross merchandise value of transactions increased by 80% to $1.8 billion in 2020 from $1.0 billion the year before, as it counted more than 7.5 million trades in the pandemic year. International sellers more than doubled in 2020, and now account for more than 30% of GMV. The site has expanded from its origins in sneakers and apparel to new categories such as trading cards and other collectibles, ... Log in to view full article.