This book has already gone into a second print and its related to the walking dead.
These days almost everything zombie related in a comic goes up or holds its value. (see any Aspen / Bluewater Zombie title, 75% follow this trend)
This week in speculation terms you have two options: You could buy a bunch of DC 3-D Variants (I am, I just don’t know which ones yet) or you could speculate on titles that are for zombie fans. Sure Its a lose lose, but the Mocking Dead #1 is my suggested pick out of those two.