A textbook publisher produces a textbook for $25 per book and sells a lot of 160 to the campus bookstore for $50 per unit. The bookstore sells the textbook new for $75 and used for $60. This edition of the book is used for 2 years (4 semesters). The bookstore sells all textbooks that it has at the beginning of each semester, and it repurchases 50% of those at the end of each semester for $30.
What is the total cost to all parties (publisher, bookstore, students) over the life of this 160-unit lot of textbooks?