Hi!
I'm not sure about costs, but if you contact some of the library vendors, they can help you out or have a sales rep call you. Just looking in Demco's catalog shows three different systems - one starting at about $5000. Highsmith, Library Store, Brodart, and others would most likely either have the information or refer you to the manufacturer.
For your older bars, can you find a manufacturer on them? If so, you might be able to locate the company and a knowledgeable rep via a company website. They might even have details on the system you have.
One thing you may want to consider is weighing potential theft against turning patrons off with the bars. I'm in a small school library and generally know my population - which kids have sticky fingers or which kids was researching the topic that is now missing half the books on the subject. There are times when I wish I had a security system, though. This topic had been discussed on a list-serv I'm on, and several librarians said they didn't like the security systems because just having them gives patrons the idea you don't trust them.
Just some food for thought!
posted 2 months ago. ( reply )