Ungraded vs Grade 8.0 Detective Comics #407 (1971): price difference
Detective Comics #407 (1971) value — Ungraded $20 vs Grade 8.0 $157. Grade 8.0 sells for 7.85× Ungraded (+685%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 7.85× (+685%) the Ungraded price — a $137 difference per comic.
Grade 6.0 sells for 4.75× (+375%) the Ungraded price — a $75 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #407 (1971), the jump from Ungraded to Grade 8.0 is worth $137 (7.85×) — 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).