Suppose Samantha decides to make lentil soup. Which result would be a cost?

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