Borrow the hardback
The digital titles often come with a price tag that’s far higher than what consumers pay. While one hardcover copy of Cook’s latest novel costs the library $18, it costs $55 to lease a digital copy – a price that can’t be haggled with publishers.
And for that, the e-book expires after a limited time, usually after one or two years, or after 26 check outs, whichever comes first. While e-books purchased by consumers can last into perpetuity, libraries need to renew their leased e-material.
I think we need to know the average number of lendings for hardback vs ebook over a 2 year period. In theory, the library should be indifferent to the format being lent out and the costs should reflect that.