Ungraded vs Grade 8.0 Spider-Man #12 (1991): price difference
Spider-Man #12 (1991) value — Ungraded $7 vs Grade 8.0 $29. Grade 8.0 sells for 4.14× Ungraded (+314%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 4.14× (+314%) the Ungraded price — a $22 difference per comic.
Grade 6.0 sells for 2.14× (+114%) the Ungraded price — a $8 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Spider-Man #12 (1991), the jump from Ungraded to Grade 8.0 is worth $22 (4.14×) — 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).