Ungraded vs PSA 10 Greg Pryor #559 1979 Topps Baseball: price difference
Greg Pryor #559 1979 Topps Baseball value — Ungraded $1 vs PSA 10 $1800. PSA 10 sells for 1,800× Ungraded (+179900%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 1,800× (+179900%) the Ungraded price — a $1,799 difference per card.
PSA 10 sells for 90× (+8900%) the Grade 9 price — a $1,780 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Greg Pryor #559 1979 Topps Baseball, the jump from Ungraded to PSA 10 is worth $1,799 (1,800×) — 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).