14. Swarthmore College

Located in the Philadelphia suburbs, students attending Swarthmore can also take classes at nearby Seven Sisters college Bryn Mawr. The annual price of attendance is $67,110, but only 37 percent of undergraduates pay the full amount. Families earning $30,000 or less pay an average net price of $6,120, and those earning $30,001 to $48,000 pay $4,422.