Suppose Vincent decides to take a trip to Tennessee. Which result would be a cost?
A: Vincent will give up the chance to go to New York. He would have enjoyed a trip to New York more than Tennessee.
B: Vincent will save some money. Plane tickets for Vincent to get to Tennessee are less expensive than tickets to New York.
This result is a cost. It involves giving up or spending something that Vincent wants or needs:
Vincent will give up the chance to go to New York. He would have enjoyed a trip to New York more than Tennessee.