Several ebook collection volumes (compiling several issues in one book) from the Fables series and its offshoots are on sale for $3.99, significantly dropped from the usual $9.99+ price on these. You don't need a tablet to read but you must have a Kindle device, not just a Kindle app on your phone, iPad, etc. You do not need a tablet only as some graphic novels require though. You can read in black and white on your regular Kindle.
I imagine these are price matched through other sellers, too, but I am not taking time to check.
Text links if the images hard to read:
Fables Vol. 1: Legends in Exile
Fairest Vol. 1: Wide Awake
Fables Vol. 18: Cubs in Toyland
Fables Vol. 19: Snow White
Fables: Werewolves of the Heartland