Ungraded vs Grade 8.0 Action Comics #391 (1970): price difference
Action Comics #391 (1970) value — Ungraded $10 vs Grade 8.0 $180. Grade 8.0 sells for 18× Ungraded (+1700%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 18× (+1700%) the Ungraded price — a $170 difference per comic.
Grade 8.0 sells for 4.86× (+386%) the Grade 6.0 price — a $143 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Action Comics #391 (1970), the jump from Ungraded to Grade 8.0 is worth $170 (18×) — 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).