Ungraded vs Grade 8.0 Adventure Comics #240 (1957): price difference
Adventure Comics #240 (1957) value — Ungraded $36 vs Grade 8.0 $314. Grade 8.0 sells for 8.72× Ungraded (+772%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 8.72× (+772%) the Ungraded price — a $278 difference per comic.
Grade 6.0 sells for 6.53× (+553%) the Ungraded price — a $199 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventure Comics #240 (1957), the jump from Ungraded to Grade 8.0 is worth $278 (8.72×) — 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).