Ungraded vs Grade 8.0 Detective Comics #266 (1959): price difference
Detective Comics #266 (1959) value — Ungraded $78 vs Grade 8.0 $907. Grade 8.0 sells for 11.63× Ungraded (+1063%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Grade 8.0 sells for 11.63× (+1063%) the Ungraded price — a $829 difference per comic.
Grade 6.0 sells for 4.83× (+383%) the Ungraded price — a $299 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #266 (1959), the jump from Ungraded to Grade 8.0 is worth $829 (11.63×) — 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).