When Peter Suber wrote 'Open-access (OA) literature is digital, online, free of charge, and free of most copyright and licensing restrictions. What makes it possible is the Internet and the consent of the author or copyright-holder.' to OA in 2004, he had scholarly journals in mind. On that front, growth has been phenomenal. According to the Directory of Open Access Journals, more than 7,500 OA journal titles were available as of February 2012. Creative Commons notes that more than 2,000 of these titles were added since October 2010. This astounding growth rate demonstrates the support and interest in OA business models from libraries, researchers, and users. However, OA should not be limited to journals. OA solutions for ebooks are necessary to guarantee that all formats of scholarship are equally accessible and affordable for the long term. There are also many challenges when applying OA business models to ebooks. Foremost is cost.
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