Captain America #21 worth

The value of Captain America #21 depends heavily on the year it was published, as the listed items show a wide range of prices:

1. The 1942 version is the most valuable, with a used price of $1,177.44 [1]. 2. The 2006, 1999, 2014, 2004, and 2020 versions are much less valuable, ranging from $2.95 to $6.14 used [2-6].

If you have a specific year or condition for your copy, let me know and I can provide a more tailored assessment.