![George Brett [Error] #124 1990 Upper Deck Baseball](/api/images/junkpal-products/sports/george-brett-error-124-baseball-cards-1990-upper-deck-sport/cover.webp)
Ungraded vs PSA 10 George Brett [Error] #124 1990 Upper Deck Baseball: price difference
George Brett [Error] #124 1990 Upper Deck Baseball value — Ungraded $3 vs PSA 10 $27. PSA 10 sells for 9× Ungraded (+800%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 9× (+800%) the Ungraded price — a $24 difference per card.
Grade 9 sells for 6× (+500%) the Ungraded price — a $15 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On George Brett [Error] #124 1990 Upper Deck Baseball, the jump from Ungraded to PSA 10 is worth $24 (9×) — 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).