Compare Buster Posey [Mini Black Border] 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 | $3.21 | — |
| PSA 10 Gem Mint | $30.00 | +835% |
Frequently Asked Questions
Is Buster Posey [Mini Black Border] worth grading? A PSA 10 Buster Posey [Mini Black Border] is worth $30.00 vs $3.21 raw — a 835% premium.
What is Buster Posey [Mini Black Border] PSA 10 worth? $30.00 as of October 2026.