The open resource movement has been around for a while, starting with static learning objects (about 2000), and transitioning to OERs that allowed for revision and reuse. The ever increasing cost of textbooks and materials for students is now pushing the OER movement forward around the globe.
Through OERs the cost of student materials can be drastically reduced.
OERs give faculty the ability to customize course materials, creating the "perfect" course packet or textbook instead of being bound to a traditional one-size-fits-all model. Customization gives faculty control over the quality of their course materials as well as the type and timing of updates to textbooks and other resources. OERs also allow required textbooks or materials to be available to all students from the very first day of class or beforehand.
StudentPIRGs. (2018). Open 101: An Action Plan for Affordable Textbooks. Retrieved from https://studentpirgs.org/2018/01/25/open-101-action-plan-affordable-textbooks/