![Casey Mize [SSP] #321 2021 Topps Baseball](/api/images/junkpal-products/sports/casey-mize-ssp-321-baseball-cards-2021-topps-sport/cover.webp)
Ungraded vs PSA 10 Casey Mize [SSP] #321 2021 Topps Baseball: price difference
Casey Mize [SSP] #321 2021 Topps Baseball value — Ungraded $38 vs PSA 10 $73. PSA 10 sells for 1.92× Ungraded (+92%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 1.92× (+92%) the Ungraded price — a $35 difference per card.
PSA 10 sells for 2.15× (+115%) the Grade 9 price — a $39 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Casey Mize [SSP] #321 2021 Topps Baseball, the jump from Ungraded to PSA 10 is worth $35 (1.92×) — 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).