These would be pretty awesome to own. However, don't hold your breath, these are not for sale. These were made as promotional advertisement items for 13th Street, a German horror movie/show TV channel. Yes, Germany DOES have a horror movie channel. And yes, America is lame for not having one as well.
These balls were placed in various bowling alleys around Germany to promote their channel. The balls were topped off with fake blood and brain goop inside the finger holes for added scare factor too.