DC Comics has opened a digital comics store on the Web, powered by Comixology.  The new Web store allows users to read digital comics purchased through it to be read on the desktop, or on iPhone, iPod, or iPad, all for one price. 

To launch the new Web store, DC is making Frank Miller’s The Dark Knight Returns available as a digital product for the first time.

The new store is powered by Comixology, which launched its Web store last summer (see “Comixology Offers Comics on the Web”).