Big Billion Startup: The Untold Flipkart Story by investigative journalist Mihir Dalal was announced as the winner of the Gaja Capital Business Book Prize 2020 on Thursday. Published by Pan Macmillan India, the book tells the story of how Sachin and Binny Bansal built Flipkart into a multi-billion-dollar company, as well as the complexities of power and hubris that led the founders to eventually sell the company.