Ungraded vs Grade 8.0 Adventures into the Unknown #155 (1965): price difference
Adventures into the Unknown #155 (1965) value — Ungraded $9 vs Grade 8.0 $78. Grade 8.0 sells for 8.67× Ungraded (+767%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 8.67× (+767%) the Ungraded price — a $69 difference per comic.
Grade 6.0 sells for 4.22× (+322%) the Ungraded price — a $29 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Adventures into the Unknown #155 (1965), the jump from Ungraded to Grade 8.0 is worth $69 (8.67×) — 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).