That's a new book from a production standpoint. A reprint is a much better return on investment because you've already done the "hard part" of producing the book. Especially in this case, reprint two proven sellers or add a new book to your production pipeline? Easy choice.
It's because the first printing of vol 1 came out while Brubaker was still writing DD. If they had waited to print omnis until his run was over, I'm sure it would have been big volume
