Ungraded vs Grade 8.0 Thundercats #21 (1988): price difference
Thundercats #21 (1988) value — Ungraded $22 vs Grade 8.0 $60. Grade 8.0 sells for 2.73× Ungraded (+173%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 8.0 sells for 2.73× (+173%) the Ungraded price — a $38 difference per comic.
Grade 6.0 sells for 1.95× (+95%) the Ungraded price — a $21 difference per comic.
Should you get this comic graded?
Grading runs about $30 per comic all-in. On Thundercats #21 (1988), the jump from Ungraded to Grade 8.0 is worth $38 (2.73×) — 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).