Cards › 1989 Bowman Tiffany Ken Griffey Jr. #220
Is the 1989 Bowman Tiffany Ken Griffey Jr. #220 worth grading?
Live market numbers as of 2026-06-22 — raw vs. graded value, PSA 10 gem rate, and the breakeven math.
Raw value
$20.00
PSA 9 value
$1,825.03
PSA 10 value
$13,000.00
PSA 10 gem rate
8.1%
Based on the numbers below, this card is potentially worth grading — a PSA 10 nets an estimated $10,998, 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 | $20.00 |
| Sales tax (8%) | $1.60 |
| Grading fee (value tier) | $25.00 |
| Shipping | $5.00 |
| Total cost basis | $51.60 |
| Net at PSA 10 (85% payout) | +$10,998.40 (+21315%) |
| Net at PSA 9 (the downside case) | +$1,499.68 |
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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Start free trialCard pricing data provided by SportsCardsPro, a service of PriceCharting. Gem rates reflect recent PSA population data (1,975 graded submissions). Not investment advice — grading outcomes are probabilistic and markets move. © Summit Sports Cards · About · Pricing