Indeed, a cottage industry has sprung up to support the "zombie" stuff.
It's an interesting niche that's been carved out. Remember when the usual group of idiots raised hell over paper silhouette targets that were too "realistic"? Well, as long as you use some green ink or dye, you can even go 3-D and make 'em *bleed*.
I can see why these are sold out everywhere, despite selling for nearly $80 apiece.