“… In order to assess which majors have the most expensive textbooks, we used data from the University of Virginia’s (UVA) textbook list. This list includes all of the textbooks for courses in the Fall 2015 semester (we used a list updated on August 21st). The textbook list includes nearly 5,000 textbooks from over 750 different courses. Of course, these results are specific to UVA, but they can provide a glimpse into the textbook costs facing US college students more generally.” …
http://priceonomics.com/which-major-has-the-most-expensive-textbooks/