Ungraded vs Grade 8.0 Adventure Comics #128 (1948): price difference
Adventure Comics #128 (1948) value — Ungraded $153 vs Grade 8.0 $835. Grade 8.0 sells for 5.46× Ungraded (+446%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 5.46× (+446%) the Ungraded price — a $682 difference per comic.
Grade 6.0 sells for 3.08× (+208%) the Ungraded price — a $319 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventure Comics #128 (1948), the jump from Ungraded to Grade 8.0 is worth $682 (5.46×) — 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).