A college student is taking a full course load, working 20 hours per week, and still has to take out a student loan to cover tuition. One day, he sees a classmate driving a new Lexus LFA sports coupe (price: $375,000) and feels he just has to have one for himself. What factor is most likely to prevent a successful marketing exchange between the student and the local Lexus dealer located in an affluent suburb about 20 miles from his university