Ungraded vs Grade 8.0 Detective Comics #320 (1963): price difference
Detective Comics #320 (1963) value — Ungraded $28 vs Grade 8.0 $184. Grade 8.0 sells for 6.57× Ungraded (+557%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 6.57× (+557%) the Ungraded price — a $156 difference per comic.
Grade 6.0 sells for 5.36× (+436%) the Ungraded price — a $122 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #320 (1963), the jump from Ungraded to Grade 8.0 is worth $156 (6.57×) — 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).