Ungraded vs Grade 8.0 Detective Comics #266 (1959): price difference
Detective Comics #266 (1959) value — Ungraded $70 vs Grade 8.0 $761. Grade 8.0 sells for 10.87× Ungraded (+987%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 10.87× (+987%) the Ungraded price — a $691 difference per comic.
Grade 6.0 sells for 5.46× (+446%) the Ungraded price — a $312 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 $691 (10.87×) — 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).