I signed up for emails from Open Road Media offering ebooks for sale. They usually offer a classic book for free. The February 2nd classic is Ayn Rand's Anthem. Here is the link to Amazon for the kindle version:

http://www.amazon.com/gp/product/B00INIT...

Or you can go to this link for other versions:

http://www.openroadmedia.com/anthem

And I'm sure you can find a link there if you want to sign up for your own email notification.