Textbook affordability (TA) is gaining momentum in academia. University libraries are well positioned to

leverage their online books acquisitions to initiate and support TA efforts. However, library e-books are acquired with a variety of purchase models on different platforms with differing digital rights management (DRM) restrictions, simultaneous user (SU) limits, and user interfaces. Currently, libraries make best guesses about best practices for e-book acquisitions for books that might be used as textbooks. This paper describes efforts by the University of Central Florida (UCF) Libraries’ acquisitions department to establish quantitative and qualitative data to inform library e-book acquisitions in support of TA efforts.