eBay revealed a list of the most expensive purchases on its site in 2019. The list includes a $4.5 million lunch with billionaire investor Warren Buffett. Visit Business Insider's homepage for more stories. Sign up for Business Insider's retail newsletter, The Drive-Thru. eBay has revealed the top 20 most expenses purchases from its site in 2019. The list of purchases includes a $4.5 million lunch with billionaire investor Warren Buffett and a $400,000 trading card autographed by six-time Super Bowl winner Tom Brady. Here's the full list.