The Weeping Angels have become a signature of the new Doctor Who. They’ve got t-shirts, books, toys and have featured in several stories. They may not be Daleks, but people love them.
Naturally, Character Options has latched on to this and produced somewhere around five variations of the creatures with more to come. Heck, one of their LEGO-style Character Building (get it?) playsets revolves around the stone assassins.