The thing about these old comics we ruined as kids because we loved them so much, if you could, would you sell them today if you had them in mint condition anyway? There's no way if I had a mint copy still of that Pink Panther comic or of the Dennis the Menace comics would I sell them, so their value in Overstreet would mean little to me. The memories the dog eared comic can bring is more valueable than a mint copy anyway, especially when YOU are the one responsible for every crease, tear, and wear in the issue. I drew on some of my old Star Wars comics when I was a kid with a friend of mine, and I'd have to say the memories of the drawn on worn out comic book mean more than the mint copy in Mylar could mean.
It's kinda like Toy Story 2. The unplayed with toys were more valueable, but the true value of the toys was when they were loved and played with.