By information, do you mean "price"?
The latest Charlton catalogue, soon to be replaced, lists $35 for Good condition (which really is kind of bad, but a whole note, heavily worn); $70 for Very Good, $120 for Fine, $200 for Very Fine (clean and white, just a few folds). It is probably reasonable to expect a modest increase when the new book comes out later this year some time.
I hope this is some use.