What's the appropriate discount for a "restored" book?

[galactus]

I'm in the middle of grading/pricing all of my Silver Age books and two of them have very slight color touches to their spines. Perhaps 5-10 little dots on each one (I can see the ink bleed on the interior of the covers).

How much should the value be decreased based on something like this?

[ANGRYCOMICMAN]

No value. So you will give them to me for free. :)
Now send them to me, now.

[hawkeyethearcher]

i know that overstreet has a section based on this question but i currently dont have a copy. if you hit your local book store though you can get your answer. unless someone could post a copy of it here.

[Underdog07]

There is no easy answer to this question.

You could do the NY Rule: Several dealers at NY shows have informed me that restoration actually increases the value of a book, but only if they are the ones selling it.

Or the real World rule: It depends on the extent of restoration and the book that is restored. Significant keys show less of a discount, especially rarer keys, while run of the mill books can be drastically discounted (ie Cptain America Comics #1 is likely 25% off while Avengers 8 would be 40% or more off).

From my experience, when buying a book off of ebay, a restored book can typically be purchased for 50% or more off of what a non-restored version goes for (again though key books get hit less).

I can not find any comments about restoration in last year's Overstreet.

[JadeGiant]

I agree with UD ... it is not consistent at all. I buy from John Haines a lot and trust his grading judgement explicitly as he is an Overstreet advisor and his stuff always grades out better than I would think ... if it were me I would go to him ...