Ungraded vs Grade 8.0 Superman #18 (1942): price difference
Superman #18 (1942) value — Ungraded $582 vs Grade 8.0 $4080. Grade 8.0 sells for 7.01× Ungraded (+601%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 7.01× (+601%) the Ungraded price — a $3,498 difference per comic.
Grade 6.0 sells for 5.92× (+492%) the Ungraded price — a $2,863 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Superman #18 (1942), the jump from Ungraded to Grade 8.0 is worth $3,498 (7.01×) — 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).