Ungraded vs PSA 10 Mystery Zone #137: price difference
Mystery Zone #137 value — Ungraded $7 vs PSA 10 $77. PSA 10 sells for 11× Ungraded (+1000%). Prices updated July 2026.
↗ Rising · +67%
GradeSold medianvs Ungraded
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Ungraded vs PSA 10
$7→$77
PSA 10 sells for 11× (+1000%) the Ungraded price — a $70 difference per card.
Grade 9 vs PSA 10
$23→$77
PSA 10 sells for 3.35× (+235%) the Grade 9 price — a $54 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Mystery Zone #137, the jump from Ungraded to PSA 10 is worth $70 (11×) — 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).