Where to buy Berserk in digital format?
(I know you asked for digital, but at least it's available in some form...)  

RightStuf started re-printing Berserk: Berserk Manga Gets Reprinting.

You can now buy it form their website: Browse All Berserk Graphic Novels.


  NOTE: The volumes don't display in proper numerical order, make sure to page through the results to find volume #1.