April 2, 2016 by: Dacia DalyTwo Best-Selling Thrillers from J.K. Rowling Only $2.99! Today, April 2 only, you can snag best-selling thrillers from J.K. Rowling and other top-rated authors for only $1.99 to $2.99. Written by J.K. Rowling under the pseudonym Robert Galbraith, “The Cuckoo’s Calling” and “The Silkworm” are both just $2.99 each. Keep in mind you don’t need a Kindle to take advantage of these deals! Read eBooks using the FREE kindle reading app on most devices.