A HarperCollins insider told The Daily Beast that the book sold a staggering 300,000 copies on the first day alone, which was Tuesday. “Sales are phenomenal, and we are convinced that the book will continue to sell phenomenally for some time to come,” says the insider. They’re not prevaricating: As of 2:30pm today, the book was #1 on Amazon, ahead of both Stephen King’s new novel, Under the Dome, and Dan Brown’s The Lost Symbol. The latter sold 1 million copies on its first day, but that figure included the UK, and top fiction generally trumps non-fiction. Any way you carve it, Going Rogue looks to be a $12 million goldmine.