![Mysterious Fossil [Reverse Holo] #91](/api/images/junkpal-products/cards/mysterious-fossil-reverse-holo-91-pokemon-sandstorm-card/img0/cover.webp)
Ungraded vs PSA 10 Mysterious Fossil [Reverse Holo] #91: price difference
Mysterious Fossil [Reverse Holo] #91 value — Ungraded $4 vs PSA 10 $161. PSA 10 sells for 40.25× Ungraded (+3925%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 40.25× (+3925%) the Ungraded price — a $157 difference per card.
PSA 10 sells for 6.71× (+571%) the Grade 9 price — a $137 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Mysterious Fossil [Reverse Holo] #91, the jump from Ungraded to PSA 10 is worth $157 (40.25×) — 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).