Been sent 2 codes for a free kindle book from Amazon, but since I have no kindle though I'd offer them here, assume anyone with a kindle can use them.
Choice of 6 books
The Girl with the Dragon Tattoo (Millennium series Book 1)
The Next Always:: The Inn at Boonsboro Trilogy: Book One
Sleepyhead (Tom Thorne Novels Book 1)
The Black Echo (Harry Bosch Book 1)
The State We're In