Ungraded vs PSA 10 Tim Duncan #21 2003 Topps Basketball: price difference
Tim Duncan #21 2003 Topps Basketball value — Ungraded $1 vs PSA 10 $148. PSA 10 sells for 148× Ungraded (+14700%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 148× (+14700%) the Ungraded price — a $147 difference per card.
Grade 9 sells for 124× (+12300%) the Ungraded price — a $123 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Tim Duncan #21 2003 Topps Basketball, the jump from Ungraded to PSA 10 is worth $147 (148×) — 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).