Ungraded vs PSA 10 Stoneforge Mystic #31: price difference
Stoneforge Mystic #31 value — Ungraded $29 vs PSA 10 $103. PSA 10 sells for 3.55× Ungraded (+255%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 3.55× (+255%) the Ungraded price — a $74 difference per card.
PSA 10 sells for 2.58× (+158%) the Grade 9 price — a $63 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Stoneforge Mystic #31, the jump from Ungraded to PSA 10 is worth $74 (3.55×) — 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).