Grade 9 vs PSA 10 Sea Serpent #78: price difference
Sea Serpent #78 value — Grade 9 $12 vs PSA 10 $103. PSA 10 sells for 8.58× Grade 9 (+758%). Prices updated July 2026.
↘ Falling · -83%
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Grade 9 vs PSA 10
$12→$103
PSA 10 sells for 8.58× (+758%) the Grade 9 price — a $91 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Sea Serpent #78, the jump from Grade 9 to PSA 10 is worth $91 (8.58×) — 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).