Purchased an eBook from Amazon in the last few years? Check your email to see if you received a settlement payment to your account.
The Department of Justice sued Apple and the big 5 publishing houses over allegations of collusion and price fixing on what was called the Agency Model of ebook pricing. The publishers settled (though Apple's still fighting) and now the money is starting to flow back to consumers. Amazon is the first to process these settlement credits but other retailers will soon follow suit.
I got $131... which, of course, will go right back to books.