Suppose John decides to take a trip to Kansas. Which result would be a cost?

 - John will spend more money. Plane tickets for John to get to Kansas are more expensive than tickets to West Virginia.
 - John will enjoy his trip to Kansas more than he would have enjoyed a trip to West Virginia.
This result is a cost. It involves giving up or spending something that John wants or needs:
John will spend more money. Plane tickets for John to get to Kansas are more expensive than tickets to West Virginia.