![Bryce Harper [Gold Wave Refractor] #139 2018 Topps Chrome Baseball](/api/images/junkpal-products/sports/bryce-harper-gold-wave-refractor-139-baseball-cards-2018-topps-chrome-sport/cover.webp)
Grade 9 vs PSA 10 Bryce Harper [Gold Wave Refractor] #139 2018 Topps Chrome Baseball: price difference
Bryce Harper [Gold Wave Refractor] #139 2018 Topps Chrome Baseball value — Grade 9 $47 vs PSA 10 $300. PSA 10 sells for 6.38× Grade 9 (+538%). Prices updated July 2026.
Medians of real sold listings per grade, updated July 2026 — how we compute values.
PSA 10 sells for 6.38× (+538%) the Grade 9 price — a $253 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Bryce Harper [Gold Wave Refractor] #139 2018 Topps Chrome Baseball, the jump from Grade 9 to PSA 10 is worth $253 (6.38×) — 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).