Ungraded vs Grade 8.0 Detective Comics #258 (1958): price difference
Detective Comics #258 (1958) value — Ungraded $69 vs Grade 8.0 $807. Grade 8.0 sells for 11.7× Ungraded (+1070%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 11.7× (+1070%) the Ungraded price — a $738 difference per comic.
Grade 6.0 sells for 3.43× (+243%) the Ungraded price — a $168 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #258 (1958), the jump from Ungraded to Grade 8.0 is worth $738 (11.7×) — 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).