Ungraded vs PSA 10 Mystery Zone [Reverse Holo] #137: price difference
Mystery Zone [Reverse Holo] #137 value — Ungraded $20 vs PSA 10 $568. PSA 10 sells for 28.4× Ungraded (+2740%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 28.4× (+2740%) the Ungraded price — a $548 difference per card.
PSA 10 sells for 13.21× (+1221%) the Grade 9 price — a $525 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Mystery Zone [Reverse Holo] #137, the jump from Ungraded to PSA 10 is worth $548 (28.4×) — 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).