Cards › 2017 Panini Donruss Patrick Mahomes II #327 Bronze Press Proof

Is the 2017 Panini Donruss Patrick Mahomes II #327 Bronze Press Proof worth grading?

Live market numbers as of 2026-10-21 — raw vs. graded value, PSA 10 gem rate, and the breakeven math.

Raw value

$655.00

PSA 9 value

$841.50

PSA 10 value

$1,425.00

PSA 10 gem rate

8.1%

Based on the numbers below, this card is potentially worth grading — a PSA 10 nets an estimated $419, but the 8.1% gem rate means the 10 is far from guaranteed. Weigh the PSA 9 outcome below.

The breakeven math

Line item	Amount
Raw purchase	$655.00
Sales tax (8%)	$52.40
Grading fee (priority tier)	$80.00
Shipping	$5.00
Total cost basis	$792.40
Net at PSA 10 (85% payout)	+$418.85 (+53%)
Net at PSA 9 (the downside case)	−$77.13

Assumptions: $80 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 (123 graded submissions). Not investment advice — grading outcomes are probabilistic and markets move. © Summit Sports Cards · About · Pricing