Did you know that if you are a resident of the state of Alabama you can sign up at your local library for access to the Alabama Virtual Library? It's free, and you get access to the online Oxford English Dictionary!
There's also a bunch of databases I haven't nosed around in yet. Much of the site is meant for kids doing research papers, but it's worth a trip to the library for free access to the OED, the second greatest accomplishment in the English language after the King James Bible (suck it, Shakespeare!). That's a savings of $295 per year!
Do other states offer this? I mean, the OE-fuckin-D. How cool is that?