Warner Bros. is offering discounts for those that trade in their old DVDs for new Blu-ray versions of the same movie.

Over 50 titles are included as part of the exchange, including "Body of Lies," "A Christmas Story" and "Michael Clayton."

You get free shipping for orders over $25, and Blu-ray prices start at $7.95. Note that some of these titles can be had from Amazon for just a little bit more than this discount pricing, and you won't have to lose your original DVD discs either. Check our Digital Digest's new Amazon Blu-ray Price Index service to quickly locate cheap Blu-ray movies (for example, search for Blu-ray movies under $10).

More details about this offer on the official DVD2Blu website: