Ungraded vs Grade 8.0 Adventure Comics #439 (1975): price difference
Adventure Comics #439 (1975) value — Ungraded $9 vs Grade 8.0 $26. Grade 8.0 sells for 2.89× Ungraded (+189%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 2.89× (+189%) the Ungraded price — a $17 difference per comic.
Grade 6.0 sells for 2.33× (+133%) the Ungraded price — a $12 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventure Comics #439 (1975), the jump from Ungraded to Grade 8.0 is worth $17 (2.89×) — 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).