Ungraded vs Grade 8.0 Detective Comics #300 (1962): price difference
Detective Comics #300 (1962) value — Ungraded $106 vs Grade 8.0 $1019. Grade 8.0 sells for 9.61× Ungraded (+861%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 9.61× (+861%) the Ungraded price — a $913 difference per comic.
Grade 8.0 sells for 3.14× (+214%) the Grade 6.0 price — a $694 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #300 (1962), the jump from Ungraded to Grade 8.0 is worth $913 (9.61×) — 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).