![Don Mattingly [Legend] #US20 2018 Topps Update Baseball](/api/images/junkpal-products/sports/don-mattingly-legend-us20-baseball-cards-2018-topps-update-sport/cover.webp)
Ungraded vs PSA 10 Don Mattingly [Legend] #US20 2018 Topps Update Baseball: price difference
Don Mattingly [Legend] #US20 2018 Topps Update Baseball value — Ungraded $7 vs PSA 10 $43. PSA 10 sells for 6.14× Ungraded (+514%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 6.14× (+514%) the Ungraded price — a $36 difference per card.
Grade 9 sells for 2.57× (+157%) the Ungraded price — a $11 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Don Mattingly [Legend] #US20 2018 Topps Update Baseball, the jump from Ungraded to PSA 10 is worth $36 (6.14×) — 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).