Ungraded vs PSA 10 Professor's Research #23: price difference
Professor's Research #23 value — Ungraded $1 vs PSA 10 $232. PSA 10 sells for 232× Ungraded (+23100%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 232× (+23100%) the Ungraded price — a $231 difference per card.
PSA 10 sells for 17.85× (+1685%) the Grade 9 price — a $219 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Professor's Research #23, the jump from Ungraded to PSA 10 is worth $231 (232×) — 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).