Ungraded vs Grade 8.0 Superboy #18 (1952): price difference
Superboy #18 (1952) value — Ungraded $120 vs Grade 8.0 $660. Grade 8.0 sells for 5.5× Ungraded (+450%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Ungraded vs Grade 8.0
$120→$660
Grade 8.0 sells for 5.5× (+450%) the Ungraded price — a $540 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Superboy #18 (1952), the jump from Ungraded to Grade 8.0 is worth $540 (5.5×) — 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).