Ungraded vs PSA 10 Scott McGregor #491 1978 Topps Baseball: price difference
Scott McGregor #491 1978 Topps Baseball value — Ungraded $1 vs PSA 10 $669. PSA 10 sells for 669× Ungraded (+66800%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 669× (+66800%) the Ungraded price — a $668 difference per card.
Grade 9 sells for 32× (+3100%) the Ungraded price — a $31 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Scott McGregor #491 1978 Topps Baseball, the jump from Ungraded to PSA 10 is worth $668 (669×) — 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).