Ungraded vs Grade 8.0 Sub-Mariner #13 (1969): price difference
Sub-Mariner #13 (1969) value — Ungraded $10 vs Grade 8.0 $75. Grade 8.0 sells for 7.5× Ungraded (+650%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 7.5× (+650%) the Ungraded price — a $65 difference per comic.
Grade 6.0 sells for 5.5× (+450%) the Ungraded price — a $45 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Sub-Mariner #13 (1969), the jump from Ungraded to Grade 8.0 is worth $65 (7.5×) — 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).