Jerry Koosman Grading Value — Is It Worth Grading?

Raw price: $2.70 | PSA 10 value: $310.98

Verdict: Insufficient data to make a recommendation

Estimated grading ROI: 1270% (assumes ~$20 PSA economy submission)

How to Decide

  1. Check the price gap: Raw $2.70 vs PSA 10 $310.98
  2. Evaluate gem rate: Unknown
  3. Calculate ROI: After $20 grading fee, ROI is ~1270%
  4. Inspect condition: Only submit cards likely to grade 9+

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