Cards › 1991 Topps Desert Shield Ken Griffey Jr. #790
Is the 1991 Topps Desert Shield Ken Griffey Jr. #790 worth grading?
Live market numbers as of 2026-10-21 — raw vs. graded value, PSA 10 gem rate, and the breakeven math.
Raw value
$682.63
PSA 9 value
$2,469.44
PSA 10 value
$10,882.35
PSA 10 gem rate
3.3%
Based on the numbers below, this card is potentially worth grading — a PSA 10 nets an estimated $8,428, but the 3.3% gem rate means the 10 is far from guaranteed. Weigh the PSA 9 outcome below.
The breakeven math
| Line item | Amount |
|---|---|
| Raw purchase | $682.63 |
| Sales tax (8%) | $54.61 |
| Grading fee (priority tier) | $80.00 |
| Shipping | $5.00 |
| Total cost basis | $822.24 |
| Net at PSA 10 (85% payout) | +$8,427.76 (+1025%) |
| Net at PSA 9 (the downside case) | +$1,276.78 |
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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Start free trialCard pricing data provided by SportsCardsPro, a service of PriceCharting. Gem rates reflect recent PSA population data (846 graded submissions). Not investment advice — grading outcomes are probabilistic and markets move. © Summit Sports Cards · About · Pricing