Cards › 2018 Panini Diamond Kings Portraits Shohei Ohtani #P15

Is the 2018 Panini Diamond Kings Portraits Shohei Ohtani #P15 worth grading?

Live market numbers as of 2026-08-14 — raw vs. graded value, PSA 10 gem rate, and the breakeven math.

Raw value

$62.08

PSA 9 value

$102.30

PSA 10 value

$390.00

PSA 10 gem rate

17.7%

Based on the numbers below, this card is potentially worth grading — a PSA 10 nets an estimated $234, but the 17.7% gem rate means the 10 is far from guaranteed. Weigh the PSA 9 outcome below.

The breakeven math

Line item	Amount
Raw purchase	$62.08
Sales tax (8%)	$4.97
Grading fee (value tier)	$25.00
Shipping	$5.00
Total cost basis	$97.05
Net at PSA 10 (85% payout)	+$234.45 (+242%)
Net at PSA 9 (the downside case)	−$10.09

Assumptions: $25 grading, $5 shipping, 8% tax on the raw purchase, and keeping 85% of the sale after marketplace fees. Your numbers will differ — run them below.

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Card pricing data provided by SportsCardsPro, a service of PriceCharting. Gem rates reflect recent PSA population data (678 graded submissions). Not investment advice — grading outcomes are probabilistic and markets move. © Summit Sports Cards · About · Pricing