![Keith Comstock [White] #778 1988 Topps Baseball](/api/images/junkpal-products/sports/keith-comstock-white-778-baseball-cards-1988-topps-sport/cover.webp)
Ungraded vs PSA 10 Keith Comstock [White] #778 1988 Topps Baseball: price difference
Keith Comstock [White] #778 1988 Topps Baseball value — Ungraded $3 vs PSA 10 $175. PSA 10 sells for 58.33× Ungraded (+5733%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 58.33× (+5733%) the Ungraded price — a $172 difference per card.
PSA 10 sells for 8.75× (+775%) the Grade 9 price — a $155 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Keith Comstock [White] #778 1988 Topps Baseball, the jump from Ungraded to PSA 10 is worth $172 (58.33×) — 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).