Ungraded vs PSA 10 Nolan Ryan #166 1990 Donruss Baseball: price difference
Nolan Ryan #166 1990 Donruss Baseball value — Ungraded $2 vs PSA 10 $205. PSA 10 sells for 102.5× Ungraded (+10150%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 102.5× (+10150%) the Ungraded price — a $203 difference per card.
PSA 10 sells for 10.79× (+979%) the Grade 9 price — a $186 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Nolan Ryan #166 1990 Donruss Baseball, the jump from Ungraded to PSA 10 is worth $203 (102.5×) — 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).