Ungraded vs Grade 8.0 Captain Marvel #21 (1970): price difference
Captain Marvel #21 (1970) value — Ungraded $16 vs Grade 8.0 $61. Grade 8.0 sells for 3.81× Ungraded (+281%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Grade 8.0 sells for 3.81× (+281%) the Ungraded price — a $45 difference per comic.
Grade 6.0 sells for 2.38× (+138%) the Ungraded price — a $22 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Captain Marvel #21 (1970), the jump from Ungraded to Grade 8.0 is worth $45 (3.81×) — 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).