<prompt> Translate the following text to EnglishKwa mfano, katika kesi ya posta, punguzo la gharama ni sawa na asilimia 100 ya kuepuka gharama, na kwa sababu hiyo, gharama za kuepuka gharama ni sawa na asilimia 100.  <response>: In postal parlance, we would say that the discount equals 100 percent of the cost avoidance at the margin, or that the passthrough of the avoidance is 100 percent. 