NYLA recently published a library value calculator (you can access it here).
In a year, if you only –
took out 1 hardcover book, 1 paperback book, borrowed 1 movie, 1 music CD, 1 audio book, used 1 magazine, 1 newspaper, requested 1 interlibrary loan, attended 1 adult class or program, used the computer for 1 hour, used 1 newspaper archive, used 1 research database, and asked 1 reference question –
the value of your library usage for the year would be $311.01.
And that does not take into consideration many of the intangibles that come with patronizing a library.