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 | $1.51 | — |
| PSA 8 | $6.32 | +319% |
| PSA 9 | $12.21 | +709% |
| PSA 10 Gem Mint | $35.81 | +2272% |
Frequently Asked Questions
Is Seattle Mariners worth grading? A PSA 10 Seattle Mariners is worth $35.81 vs $1.51 raw — a 2272% premium.
What is Seattle Mariners PSA 10 worth? $35.81 as of August 2026.