Ungraded vs Grade 8.0 Detective Comics #388 (1969): price difference
Detective Comics #388 (1969) value — Ungraded $35 vs Grade 8.0 $170. Grade 8.0 sells for 4.86× Ungraded (+386%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 4.86× (+386%) the Ungraded price — a $135 difference per comic.
Grade 6.0 sells for 3.2× (+220%) the Ungraded price — a $77 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Detective Comics #388 (1969), the jump from Ungraded to Grade 8.0 is worth $135 (4.86×) — 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).