Sometimes added to the “Four P’s of Marketing,” policy refers to the consideration of the laws or regulations that influence the behavior you want to change. This can include those laws or penalties you can use or enact to further encourage the behavior (such as imprisonment for drunk driving), as well as understanding or changing those policies or laws that may act as barriers to the behavior (such as inconvenient clinic locations). Price One of the “Four P’s of Marketing,” price refers to the costs (financial, emotional, psychological, or time) or barriers (see Barriers) the audience members face in making the desired behavior change. Price leads you to.