Ungraded vs Grade 8.0 Detective Comics #308 (1962): price difference
Detective Comics #308 (1962) value — Ungraded $26 vs Grade 8.0 $148. Grade 8.0 sells for 5.69× Ungraded (+469%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Grade 8.0 sells for 5.69× (+469%) the Ungraded price — a $122 difference per comic.
Grade 6.0 sells for 4.08× (+308%) the Ungraded price — a $80 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #308 (1962), the jump from Ungraded to Grade 8.0 is worth $122 (5.69×) — 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).