Ungraded vs Grade 8.0 Superboy #55 (1957): price difference
Superboy #55 (1957) value — Ungraded $35 vs Grade 8.0 $657. Grade 8.0 sells for 18.77× Ungraded (+1777%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 18.77× (+1777%) the Ungraded price — a $622 difference per comic.
Grade 6.0 sells for 5.31× (+431%) the Ungraded price — a $151 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Superboy #55 (1957), the jump from Ungraded to Grade 8.0 is worth $622 (18.77×) — 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).