![Tim Duncan [White Refractor] #21 2007 Topps Chrome Basketball](/api/images/junkpal-products/sports/tim-duncan-white-refractor-21-basketball-cards-2007-topps-chrome-sport/cover.webp)
Ungraded vs PSA 10 Tim Duncan [White Refractor] #21 2007 Topps Chrome Basketball: price difference
Tim Duncan [White Refractor] #21 2007 Topps Chrome Basketball value — Ungraded $216 vs PSA 10 $680. PSA 10 sells for 3.15× Ungraded (+215%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 3.15× (+215%) the Ungraded price — a $464 difference per card.
PSA 10 sells for 2.18× (+118%) the Grade 9 price — a $368 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Tim Duncan [White Refractor] #21 2007 Topps Chrome Basketball, the jump from Ungraded to PSA 10 is worth $464 (3.15×) — 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).