![Tim Duncan [Refractor] #21 2007 Topps Chrome Basketball](/api/images/junkpal-products/sports/tim-duncan-refractor-21-basketball-cards-2007-topps-chrome-sport/cover.webp)
Ungraded vs PSA 10 Tim Duncan [Refractor] #21 2007 Topps Chrome Basketball: price difference
Tim Duncan [Refractor] #21 2007 Topps Chrome Basketball value — Ungraded $49 vs PSA 10 $265. PSA 10 sells for 5.41× Ungraded (+441%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 5.41× (+441%) the Ungraded price — a $216 difference per card.
Grade 9 sells for 2.73× (+173%) the Ungraded price — a $85 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Tim Duncan [Refractor] #21 2007 Topps Chrome Basketball, the jump from Ungraded to PSA 10 is worth $216 (5.41×) — 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).