100 that you have to pay for,plus 100 that are free as ebooks. (The #1 free political ebook is "The Communust Manifesto." I just downloaded one of the top free ones, but not that one. If you need a Kindle to read ebooks, you can get one here. Actually, I usually read my ebooks using the Kindle app on my iPad... which is something you can buy here.)
And please buy whatever you want through the official Althouse blog Amazon portal.