EbSC usage statistics for BGSU and OhioLINK as a whole from 2007 were collected by the OhioLINK EBC Usage Statistics portal for Springer and Oxford. This data did not always contain enough information to use a particular title or sometimes in accordance with a patently false title (for example. B one with a print publication date several years after the date of use). When this happened, the data was removed from the analysis. As a result, 953 of the 31,740 registrations representing 27,843 titles in the OHIOLINK EBC platform consortium and 70 of the 6,440 titles used on the OHIOLINK EBC platform at BGSU have been discontinued. Use report titles were then cross-referenced with ISBN or titles on editorial lists to collect usage data with robust bibliographic information. A precondition for access to the uses of the database was the agreement to keep anonymous the identities of the various institutions, with the exception of the BGSU. Table 5 shows some non-identifiable characteristics of the institutions selected for comparison. Another clear path for future research is the cost of e-books. Carrico found that, despite the fact that many MINT titles were not used, however, several researchers pointed out that e-books generally cost much more than printing and (in a study in Auburn) Bailey, Scott and Best, e-books cost on average 35% more than their counterparts.61 Libraries seem not to want to spend money. for content that is not used, whether printed or electronic, but discounts on packages or consortia (or both) could still mean that libraries pay less for low-utilization packages than if they only purchased individually than the titles used.
Of course, the DDA remains a popular buying method, as it provides a large number of titles while minimizing purchase costs. Garskof et al. found that for PALCI libraries, ROI was 3 to 6 times the individual library`s contribution for their DDAs.62 A more in-depth study of ROI for e-books purchased by the consortium on the basis of use could support creative cost-sharing and shared package development solutions , maximizing the benefits for libraries and publishers. While libraries have owned e-books for several decades, standard usage statistics from many large publishers are available for a much shorter period of time.