The world is full of shitty things. Bill Watterson's clever, poignant comic series Calvin and Hobbes is not one of them. And now, compendiums of the illustrated saga of a boy and his sage toy tiger available on Amazon are currently $2 for Kindle editions.
The prices usually range from $13 to $19, so that's a big discount.
Unfortunately, the collections are incomplete, so you won't be able to become a full Kindle completist on a budget. And there are a ton of additional Calvin and Hobbes titles available in print on Amazon, but they're not discounted. Still, this is a great way to introduce someone to the comic, or reacquaint yourself with some old favorites.