The Moonstone book is not a comic. It is a collection of prose short stories similar to their Zorro book that was released about the time DE started their Zorro comic series.
It's a $48 hardcover that's due out in June although Moonstone has a serious problem with publication dates. There should be a picture per short story. The Zorro and Phantom collections were pretty good. Obviously I'm going to get it when it comes out in soft cover.
Always remember, Murphy was an optimist