Grade 9 vs PSA 10 Curt Schilling #528 1991 Upper Deck Baseball: price difference
Curt Schilling #528 1991 Upper Deck Baseball value — Grade 9 $14 vs PSA 10 $16. PSA 10 sells for 1.14× Grade 9 (+14%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 1.14× (+14%) the Grade 9 price — a $2 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Curt Schilling #528 1991 Upper Deck Baseball, the jump from Grade 9 to PSA 10 is worth $2 (1.14×) — at today's prices that doesn't cover the fee — grading this one is for the collection, not the flip. 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).