Library Journal/School Library Journal conducted the 6th annual survey of public libraries regarding ebooks. The 2015 report is available for download here. The report is made available courtesy of Freading. Registration is required.
From the executive summary: ” If it appears from the current survey (based on 317 U.S. public libraries responding) that much of the enthusiasm for ebooks has cooled, it is only because they have become less of a novelty and more mainstream.”
“Ebook pricing is too high” is the most common complaint from public librarians about ebooks.
Here’s a page snip showing the number of public libraries offering ebooks over the last 6 reports: