You have a very strong case for using open textbooks and getting away from being dominated by the publishers.
In math at VCC the publishing companies keep putting out new (and more expensive) updates to their text books that very often just rearrange the topics in a different order! We as Instructors have to then revamp our whole program to fit the new text being sold by the bookstore!
We need those open texts urgently. If students didnt have to buy anything it would be incredible!!!!
cheers
C