Definition: Craft one correct answer to the question given in input. To make it more interesting, try to use non-stereotypical language if possible. Make sure your correct answer is reasonably long, consistent with the context, and requires common sense (instead of explicit extraction from the context.) In your answer, use as few words as possible from the given context. Use a response that is uncommon/non-stereotypical, so that it is less predictable. To be less repetitive, please vary your language for each question.
Input: Context: I winced - the amount was around five hundred dollars . " No , " she said . " The doctors have written off any difference . All you 're responsible for is a $ 20 co - pay . 
Question: Why is the narrator feeling relieved leaving the office ?

They did n't pay as much as expected .