Ungraded vs Grade 8.0 Adventures into the Unknown #151 (1964): price difference
Adventures into the Unknown #151 (1964) value — Ungraded $10 vs Grade 8.0 $93. Grade 8.0 sells for 9.3× Ungraded (+830%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 9.3× (+830%) the Ungraded price — a $83 difference per comic.
Grade 6.0 sells for 5.6× (+460%) the Ungraded price — a $46 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventures into the Unknown #151 (1964), the jump from Ungraded to Grade 8.0 is worth $83 (9.3×) — 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).