Ungraded vs Grade 8.0 Detective Comics #231 (1956): price difference
Detective Comics #231 (1956) value — Ungraded $71 vs Grade 8.0 $1554. Grade 8.0 sells for 21.89× Ungraded (+2089%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 21.89× (+2089%) the Ungraded price — a $1,483 difference per comic.
Grade 8.0 sells for 5.51× (+451%) the Grade 6.0 price — a $1,272 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #231 (1956), the jump from Ungraded to Grade 8.0 is worth $1,483 (21.89×) — 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).