Ungraded vs Grade 8.0 Superman #366 (1981): price difference
Superman #366 (1981) value — Ungraded $3 vs Grade 8.0 $46. Grade 8.0 sells for 15.33× Ungraded (+1433%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 15.33× (+1433%) the Ungraded price — a $43 difference per comic.
Grade 6.0 sells for 4× (+300%) the Ungraded price — a $9 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Superman #366 (1981), the jump from Ungraded to Grade 8.0 is worth $43 (15.33×) — 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).