Adapted from "Start Small" from OER -- Open Educational Resources: Get Started, University of Pittsburgh University Library System
They can be costly for the students
The student often times don't use them
Access codes are often times single use so the sell back value of the book is decreased
Use articles available through the Library's databases
Use books (print and electronic) already available through the Library
Talk with the Library about purchasing materials (i.e. academic books, eBooks, etc.)
Consult with your subject librarian for assistance locating materials, both OER and library.
Let your students know as early as possible which books are required reading for your class, this gives them time to shop around.
Make sure your syllabi are up-to-date; make sure that Suggested Readings aren't listed as Required Readings
Let students know if it's okay for them to use an older edition of the textbook.
Let new students know about textbook rentals and other alternatives to purchasing a textbook
Get your orders in early so the bookstore knows which books to buy back and keep in stock
Let them know if you would like to keep using an older edition
Source: Open Educational Resources (OER): 8 Easy Things, Archbishop Alemany Library, Dominican University of California