I would add that any parent that gives the child 60-70$, for whatever reason, is very irresponsible and should let the other parent have a try at custody...
Kids don't buy anything. The parents do, wether they are present or not. The nuance is in the allowance, if the child is lucky enough to get such a thing. And I would hope it would never be 60-70$ a week.
If the parent is not sure if a particular game is ok for the child or not(because it does depend on the child's personality, her/his tolerance/awareness to violence/adultness), that parent should take a few hours and rent the bloddy thing, to GET INFORMED ABOUT THE CHILD'S INTERESTS.