Compare Bert Blyleven 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 | $2.25 | — |
| PSA 8 | $40.89 | +1717% |
| PSA 9 | $77.88 | +3361% |
| PSA 10 Gem Mint | $401.84 | +17760% |
Frequently Asked Questions
Is Bert Blyleven worth grading? A PSA 10 Bert Blyleven is worth $401.84 vs $2.25 raw — a 17760% premium.
What is Bert Blyleven PSA 10 worth? $401.84 as of November 2026.