I love love love LOVE LOVE LOVE my Kindle.
With Amazon Prime, I got the entire library of out of copyright classics for free. That included pretty much every book I actually sort of enjoyed from middle school and high school, included the entirety of the works of Mark Twain.
The 99 cent book sales ensure I'm not paying too much for something I might not like, and every month Amazon publishes a list of 100 books available for less than $4, which usually includes a few bestsellers.