![Mark McGwire [Pattern 88] #13 1998 Topps Tek Baseball](/api/images/junkpal-products/sports/mark-mcgwire-pattern-88-13-baseball-cards-1998-topps-tek-sport/cover.webp)
Ungraded vs PSA 10 Mark McGwire [Pattern 88] #13 1998 Topps Tek Baseball: price difference
Mark McGwire [Pattern 88] #13 1998 Topps Tek Baseball value — Ungraded $15 vs PSA 10 $382. PSA 10 sells for 25.47× Ungraded (+2447%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 25.47× (+2447%) the Ungraded price — a $367 difference per card.
PSA 10 sells for 5.31× (+431%) the Grade 9 price — a $310 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Mark McGwire [Pattern 88] #13 1998 Topps Tek Baseball, the jump from Ungraded to PSA 10 is worth $367 (25.47×) — 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).