![Bryce Harper [Negative] #351 2018 Topps Baseball](/api/images/junkpal-products/sports/bryce-harper-negative-351-baseball-cards-2018-topps-sport/cover.webp)
Ungraded vs PSA 10 Bryce Harper [Negative] #351 2018 Topps Baseball: price difference
Bryce Harper [Negative] #351 2018 Topps Baseball value — Ungraded $10 vs PSA 10 $95. PSA 10 sells for 9.5× Ungraded (+850%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
Ungraded vs PSA 10
$10→$95
PSA 10 sells for 9.5× (+850%) the Ungraded price — a $85 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Bryce Harper [Negative] #351 2018 Topps Baseball, the jump from Ungraded to PSA 10 is worth $85 (9.5×) — 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).