Adapted from Robert Kirkman's horror comics, the Blu-ray of AMC's popular zombie television series features all six Season One episodes in their broadcast aspect ratio of 1.78:1 with 5.1 Dolby TrueHD audio tracks.
The disc also contains an assortment of bonus supplements that includes cast and crew interviews, trailers, and numerous behind-the-scenes featurettes.
why not pay extra $9.50? you get commentaries on all episodes and black/white version of the Plot. unless you care less about extras go for the set without commentaries, myself I ordered for the extras.