This article alerts academic libraries to some of the methods for purchasing electronic books (e-books) and notes that, while they are similar to the models used for journal-evaluation purposes, there are a number of factors important to consider that are different for e-books. Simon notes that, while theoretically there should be some advantages with purchasing books in electronic format, such as user-preference and reduction of theft, many of these are reduced by factors imposed by publishers and vendors. There are often restrictions regarding the number of users permitted to view an item at a time and, in some cases, even access to a library of items. The point of this article is to provide a guideline for academic libraries when deciding whether to purchase individual e-books, platforms, or collections. He lists the following criteria that may best help inform purchasing decisions: Acquisition route; Access model; Title selection; Access management; File formats; Cataloging; Interlibrary loan; Licensing and copyright; Privacy; and Open access.