Ungraded vs Grade 8.0 Adventure Comics #377 (1969): price difference
Adventure Comics #377 (1969) value — Ungraded $7 vs Grade 8.0 $69. Grade 8.0 sells for 9.86× Ungraded (+886%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 9.86× (+886%) the Ungraded price — a $62 difference per comic.
Grade 8.0 sells for 3.63× (+263%) the Grade 6.0 price — a $50 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventure Comics #377 (1969), the jump from Ungraded to Grade 8.0 is worth $62 (9.86×) — 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).