Ungraded vs Grade 6.0 Detective Comics #142 (1948): price difference
Detective Comics #142 (1948) value — Ungraded $552 vs Grade 6.0 $3512. Grade 6.0 sells for 6.36× Ungraded (+536%). Prices updated September 2026.
↘ Falling · -31%
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Ungraded vs Grade 6.0
$552→$3512
Grade 6.0 sells for 6.36× (+536%) the Ungraded price — a $2,960 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #142 (1948), the jump from Ungraded to Grade 6.0 is worth $2,960 (6.36×) — 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).