Detective Comics #21 value

The value of *Detective Comics #21* depends heavily on the specific printing year, as shown in the results you have. The 1938 original is listed with a high used value of $1955, which reflects its historical significance. In contrast, the 2013 reprint is valued much lower at $3.19 used. If you are looking at the original 1938 issue, its high value is driven by its rarity and importance in comic book history. For a more precise valuation, you should compare the current live asking prices shown on the page against these sold-comp values.