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 each semester, and it repurchases 50% of those at the end of each semester for $30. What is the net profit for the publisher (sales - costs) over the life of this 160-unit lot of textbooks