Heaven Is For Real, recounting evangelical pastor Todd Burpo‘s the-four year old son Colton’s otherworldly experience while undergoing surgery for a burst appendix, has proven to be a sleeper paperback hit for Thomas Nelson. The publisher tells the NYT the book (co-written with Sarah Palin ghostwriter Lynn Vincent) had “broken company sales records”, going back to press 22 times on an initial print run of 40,000 copies since the book’s November release. There are now more than 1.5 million copies in print (and “hundreds of thousands of copies” sold) with strong sales in both Barnes & Noble and Christian specialty markets. […]