If you’re a Comcast customer without a Netflix subscription who’s dying to know what the big deal is about “House of Cards,” you’re in luck. A recent deal between Comcast and Sony Pictures Home Entertainment has given Comcast the rights to sell the Emmy Award-winning first season of “House of Cards” through its Xfinity Store – which launched in November as a way to combat Netflix and Amazon Instant video. The deal also added other Sony titles to the Xfinity Store, ahead of the traditional on-demand rental window. Movies like “American Hustle” and TV shows like “Breaking Bad” are also available for purchase directly through any Comcast cable box or at xfinity.com/store. Any content bought through the Xfinity Store can then be watched on your TV, computer or mobile device. The deal gives Comcast customers a new way to watch “House of Cards,” but you have to wonder – with the first season available on DVD since June and the inexpensive cost of Netflix, who is this deal really for?