Suppose Maria decides to go as a ghost. Which result would be a cost?
Maria will get to wear the costume she is more excited about. Maria will spend some time and money to get the costume.
Maria is deciding whether to go as a ghost or a superhero to a costume party. She would rather go as a ghost. But she already has a superhero costume.
Before you decide to do something, it is often helpful to list costs and benefits.
Costs are what you give up or spend when you decide to do something. Costs involve giving up things that you want or need.
Benefits are what you gain or save when you decide to do something. Benefits involve gaining something that you want or need.
This result is a cost. It involves giving up or spending something that Maria wants or needs:
Maria will spend some time and money to get the costume.