![Slugma [Reverse Holo] #99](/api/images/junkpal-products/cards/slugma-reverse-holo-99-pokemon-skyridge-card/img0/cover.webp)
Ungraded vs PSA 10 Slugma [Reverse Holo] #99: price difference
Slugma [Reverse Holo] #99 value — Ungraded $39 vs PSA 10 $325. PSA 10 sells for 8.33× Ungraded (+733%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 8.33× (+733%) the Ungraded price — a $286 difference per card.
PSA 10 sells for 4.06× (+306%) the Grade 9 price — a $245 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Slugma [Reverse Holo] #99, the jump from Ungraded to PSA 10 is worth $286 (8.33×) — 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).