Ungraded vs Grade 8.0 Detective Comics #566 (1986): price difference
Detective Comics #566 (1986) value — Ungraded $19 vs Grade 8.0 $49. Grade 8.0 sells for 2.58× Ungraded (+158%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 2.58× (+158%) the Ungraded price — a $30 difference per comic.
Grade 6.0 sells for 2× (+100%) the Ungraded price — a $19 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #566 (1986), the jump from Ungraded to Grade 8.0 is worth $30 (2.58×) — at today's prices that doesn't cover the fee — grading this one is for the collection, not the flip. 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).