Compare Seattle Mariners values across different grades. See whether grading is worth it based on current prices and PSA gem rates.
Price by Grade
| Grade | Guardian Estimate | Premium vs Raw |
|---|
| Raw / Ungraded | $1.52 | — |
| PSA 8 | $6.30 | +314% |
| PSA 9 | $12.15 | +699% |
| PSA 10 Gem Mint | $35.38 | +2228% |
Frequently Asked Questions
Is Seattle Mariners worth grading? A PSA 10 Seattle Mariners is worth $35.38 vs $1.52 raw — a 2228% premium.
What is Seattle Mariners PSA 10 worth? $35.38 as of October 2026.