Grading comic book condition involves considering multiple aspects. First, inspect the cover for any scratches or dents. Then, examine the interior pages for rips, folds, or discoloration. The binding should be intact too. A high-grade comic is nearly perfect, while a lower grade has more visible wear and tear.
You can grade comic books based on factors like cover condition, page quality, and completeness. A mint condition comic would have no flaws, while a lower grade might have creases or tears.