Ungraded vs Grade 8.0 Invincible [2nd Print] #51 (2008): price difference
Invincible [2nd Print] #51 (2008) value — Ungraded $308 vs Grade 8.0 $687. Grade 8.0 sells for 2.23× Ungraded (+123%). Prices updated September 2026.
Medians of real sold listings per grade, updated September 2026 — how we compute values.
Grade 8.0 sells for 2.23× (+123%) the Ungraded price — a $379 difference per comic.
Grade 6.0 sells for 1.86× (+86%) the Ungraded price — a $264 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Invincible [2nd Print] #51 (2008), the jump from Ungraded to Grade 8.0 is worth $379 (2.23×) — 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).