HARTFORD, Conn. (AP) — “Whenever bestselling author Robin Cook releases a new medical thriller, the head of the public library in West Haven knows demand for digital copies will be high. So will the price. Like many libraries, West Haven has been grappling with the soaring costs of e-books and audiobooks. 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 checkouts, whichever comes first. While e-books purchased by consumers can last into perpetuity, libraries need to renew their leased e-material. The modestly funded West Haven Library has spent more than $12,000 over the last three years to lease just 276 additional digital titles beyond what patrons can access through a consortium of public libraries. Eighty-four of those books are no longer available. If that same amount had been spent on paper books, it would have covered about 800 titles. “Imagine if a playground was built at a school with tax dollars, only to be taken down after two years of use,” librarian Colleen Bailie said at a recent public hearing.”