Ungraded vs Grade 8.0 Adventure Comics #451 (1977): price difference
Adventure Comics #451 (1977) value — Ungraded $5 vs Grade 8.0 $32. Grade 8.0 sells for 6.4× Ungraded (+540%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 6.4× (+540%) the Ungraded price — a $27 difference per comic.
Grade 6.0 sells for 3.8× (+280%) the Ungraded price — a $14 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventure Comics #451 (1977), the jump from Ungraded to Grade 8.0 is worth $27 (6.4×) — 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).