![Grant Long [Error] #100 1990 Fleer Basketball](/api/images/junkpal-products/sports/grant-long-error-100-basketball-cards-1990-fleer-sport/cover.webp)
Ungraded vs PSA 10 Grant Long [Error] #100 1990 Fleer Basketball: price difference
Grant Long [Error] #100 1990 Fleer Basketball value — Ungraded $4 vs PSA 10 $206. PSA 10 sells for 51.5× Ungraded (+5050%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 51.5× (+5050%) the Ungraded price — a $202 difference per card.
Grade 9 sells for 9.5× (+850%) the Ungraded price — a $34 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Grant Long [Error] #100 1990 Fleer Basketball, the jump from Ungraded to PSA 10 is worth $202 (51.5×) — 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).