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 | $2.13 | — |
| PSA 8 | $41.20 | +1834% |
| PSA 9 | $149.98 | +6941% |
| PSA 10 Gem Mint | $2600.00 | +121966% |
Frequently Asked Questions
Is Bert Blyleven worth grading? A PSA 10 Bert Blyleven is worth $2600.00 vs $2.13 raw — a 121966% premium.
What is Bert Blyleven PSA 10 worth? $2600.00 as of November 2026.