Ungraded vs PSA 10 John Williams #37 1990 Fleer Basketball: price difference
John Williams #37 1990 Fleer Basketball value — Ungraded $2 vs PSA 10 $68. PSA 10 sells for 34× Ungraded (+3300%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 34× (+3300%) the Ungraded price — a $66 difference per card.
PSA 10 sells for 22.67× (+2167%) the Grade 9 price — a $65 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On John Williams #37 1990 Fleer Basketball, the jump from Ungraded to PSA 10 is worth $66 (34×) — 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).