Ungraded vs Grade 8.0 Detective Comics #131 (1948): price difference
Detective Comics #131 (1948) value — Ungraded $182 vs Grade 8.0 $1441. Grade 8.0 sells for 7.92× Ungraded (+692%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 7.92× (+692%) the Ungraded price — a $1,259 difference per comic.
Grade 8.0 sells for 5.48× (+448%) the Grade 6.0 price — a $1,178 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #131 (1948), the jump from Ungraded to Grade 8.0 is worth $1,259 (7.92×) — 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).