![David Robinson [Refractor] #21 1993 Finest Basketball](/api/images/junkpal-products/sports/david-robinson-refractor-21-basketball-cards-1993-finest-sport/cover.webp)
Ungraded vs PSA 10 David Robinson [Refractor] #21 1993 Finest Basketball: price difference
David Robinson [Refractor] #21 1993 Finest Basketball value — Ungraded $24 vs PSA 10 $946. PSA 10 sells for 39.42× Ungraded (+3842%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 39.42× (+3842%) the Ungraded price — a $922 difference per card.
PSA 10 sells for 7.75× (+675%) the Grade 9 price — a $824 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On David Robinson [Refractor] #21 1993 Finest Basketball, the jump from Ungraded to PSA 10 is worth $922 (39.42×) — 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).