Suppose Dana decides to make egg drop soup. Which result would be a cost?

 - The egg drop soup will be tastier than the chicken soup would have been.
 - Dana will spend more time making the egg drop soup than she would have spent making the chicken soup.
This result is a cost. It involves giving up or spending something that Dana wants or needs:
Dana will spend more time making the egg drop soup than she would have spent making the chicken soup.