I enjoy Hero Academy and Outwitters and have been waiting for this game. I reserved my game name and everything, but somehow the release slipped under my nose. I finally tried it out this week and it is indeed a fun game. The prices do seem to be steep, but I need to get a bit more play time in before I decide on that. I'll most likely purchase one of the packs at least to support the devs.
If you enjoy strategy games definitely give it a shot. I hope it gets more press and I'm surprised Toucharcade has not reviewed it yet. I would love to see this game on other platforms like my PC. It's made with Unity 3D, which is a multi-platform game engine, so I have my fingers crossed.