Ungraded vs Grade 8.0 Amazing Spider-Man #31 (1965): price difference
Amazing Spider-Man #31 (1965) value — Ungraded $156 vs Grade 8.0 $1301. Grade 8.0 sells for 8.34× Ungraded (+734%). Prices updated August 2026.
Medians of real sold listings per grade, updated August 2026 — how we compute values.
Grade 8.0 sells for 8.34× (+734%) the Ungraded price — a $1,145 difference per comic.
Grade 6.0 sells for 3.6× (+260%) the Ungraded price — a $406 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Amazing Spider-Man #31 (1965), the jump from Ungraded to Grade 8.0 is worth $1,145 (8.34×) — 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).