Acrobat Cat

If {x} was {0} Acrobat Cat falls down the
stairs and dies
If {x} was {2} Acrobat Cat falls down the stairs and hurts herself badly
If {x} was {4} Acrobat Cat Will NOT get hurt but
she will hiss, and claw
at you until you give her 1000 times {x} Cat treats
How much would you pay for Acrobat Cat???