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.