Ungraded vs Grade 8.0 Detective Comics #155 (1950): price difference
Detective Comics #155 (1950) value — Ungraded $133 vs Grade 8.0 $908. Grade 8.0 sells for 6.83× Ungraded (+583%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 6.83× (+583%) the Ungraded price — a $775 difference per comic.
Grade 6.0 sells for 3.41× (+241%) the Ungraded price — a $320 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #155 (1950), the jump from Ungraded to Grade 8.0 is worth $775 (6.83×) — 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).