Action Comics #21 price

The value of Action Comics #21 depends heavily on the year it was published. From the catalog results:

1. Action Comics #21 (1940) is highly valuable, with a used price of $1,076 [1]. 2. Action Comics #21 (2013) is much less valuable, with a used price of $2.66 [2].

If you have a specific year or condition in mind (e.g., graded, sealed, or a different edition), let me know, and I can provide more tailored details. Otherwise, the 1940 version is the most valuable by far. You can compare current eBay asking prices for the version you own by checking the live listings.