Ungraded vs Grade 8.0 Action Comics #21 (1940): price difference
Action Comics #21 (1940) value — Ungraded $1076 vs Grade 8.0 $32401. Grade 8.0 sells for 30.11× Ungraded (+2911%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Grade 8.0 sells for 30.11× (+2911%) the Ungraded price — a $31,325 difference per comic.
Grade 8.0 sells for 8.77× (+777%) the Grade 6.0 price — a $28,708 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Action Comics #21 (1940), the jump from Ungraded to Grade 8.0 is worth $31,325 (30.11×) — if your copy grades at the top, that premium can cover the fee. A grade below the top one changes the math, so run your exact numbers first.
Run the grading break-even math →Values are estimates from real sales data — not appraisals or offers. Some links earn JunkPal a commission at no cost to you (disclosure).