Netflix has announced that they will stop selling previously viewed DVDs on November 30th. Some titles are as low as $5.99, and you can view the entire list of available titles on the Netflix Website.
The reason from the Netflix website:
We thought about it and it makes sense for us to focus on our main business - delivering great movie rentals to you by mail and instantly. We're sorry for the inconvenience.
Here's the e-mail Netflix is sending to customers:
Thanks to Dave, Dan, and Tommy for sending this in.