I ordered my K3 3g+wifi when I was trying to read a paperback that is more than 1600 pages, larger than a standard paperback that weighs almost 2 pounds by my kitchen scale. (The complete Gormenghast trilogy if you're curious) Then I realized that the book is not available on the Kindle store or anywhere else as an ebook
But I am taking a history of womens' literature class next semester that has more than 15 textbooks, so I'm sure I will be very happy with my Kindle. Unfortunately, most of my other textbooks (Computer Science major) are unavailable on the Kindle store, or cost the same amount as the resellable hardback version.