Detective Comics #9 worth

Detective Comics #9 is an extremely valuable piece of comic book history, with the catalog showing a used value of $4500. This high value is driven by its status as one of the earliest appearances of Batman. For comparison, other high-grade issues like Detective Comics #99 are valued around $678.36 used, while later issues like #90 are valued around $413.84 used. Given the rarity and historical significance of #9, it commands a significantly higher price point than the other issues listed.