![Ryan McMahon [Gold Wave Refractor] #21 2018 Topps Chrome Baseball](/api/images/junkpal-products/sports/ryan-mcmahon-gold-wave-refractor-21-baseball-cards-2018-topps-chrome-sport/cover.webp)
Ungraded vs PSA 10 Ryan McMahon [Gold Wave Refractor] #21 2018 Topps Chrome Baseball: price difference
Ryan McMahon [Gold Wave Refractor] #21 2018 Topps Chrome Baseball value — Ungraded $20 vs PSA 10 $90. PSA 10 sells for 4.5× Ungraded (+350%). Prices updated June 2026.
Medians of real sold listings per grade, updated June 2026 — how we compute values.
PSA 10 sells for 4.5× (+350%) the Ungraded price — a $70 difference per card.
PSA 10 sells for 6× (+500%) the Grade 9 price — a $75 difference per card.
Should you get this card graded?
Grading runs about $30 per card all-in. On Ryan McMahon [Gold Wave Refractor] #21 2018 Topps Chrome Baseball, the jump from Ungraded to PSA 10 is worth $70 (4.5×) — 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).