Ungraded vs Grade 8.0 Invincible #51 (2008): price difference
Invincible #51 (2008) value — Ungraded $82 vs Grade 8.0 $115. Grade 8.0 sells for 1.4× Ungraded (+40%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 1.4× (+40%) the Ungraded price — a $33 difference per comic.
Grade 8.0 sells for 1.2× (+20%) the Grade 6.0 price — a $19 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Invincible #51 (2008), the jump from Ungraded to Grade 8.0 is worth $33 (1.4×) — 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).