Ungraded vs Grade 8.0 Adventure Comics #423 (1972): price difference
Adventure Comics #423 (1972) value — Ungraded $9 vs Grade 8.0 $73. Grade 8.0 sells for 8.11× Ungraded (+711%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Grade 8.0 sells for 8.11× (+711%) the Ungraded price — a $64 difference per comic.
Grade 6.0 sells for 2.89× (+189%) the Ungraded price — a $17 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventure Comics #423 (1972), the jump from Ungraded to Grade 8.0 is worth $64 (8.11×) — 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).