Ungraded vs Grade 8.0 Captain Marvel #31 (1974): price difference
Captain Marvel #31 (1974) value — Ungraded $8 vs Grade 8.0 $30. Grade 8.0 sells for 3.75× Ungraded (+275%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 3.75× (+275%) the Ungraded price — a $22 difference per comic.
Grade 6.0 sells for 3.13× (+213%) the Ungraded price — a $17 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Captain Marvel #31 (1974), the jump from Ungraded to Grade 8.0 is worth $22 (3.75×) — at today's prices that doesn't cover the fee — grading this one is for the collection, not the flip. 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).