Prices vary from region to region--a lot more than you may think!
Where are you? You can add your location to your user profile so that you can get better answers in the future, and quicker too.
If I want to price something, I add it to my watch list on eBay and see where it closes at.
I would do that to more than one item so I can get a sampling of others in about the same condition.
You can also check out these sites too for their estimates:
http://www.nada.com/
http://www.kbb.com/