A great selection of classic DC graphic novels on sale through Comixology (website and in app). Best value for money are All Star Superman, Batman: The Complete Hush, Batman: The Long Halloween, V for Vendetta, JLA Vol.1. Personal favourites include American Vampire, Fables and Swamp Thing, but you couldn't really go wrong with any of the books in this sale.
They are also giving away select titles 1 per day every day until xmas or something. S