Graded-card decisions combine authentication, condition, market demand, service cost and personal collecting goals. A numerical grade is useful information, but it does not replace inspection of the card or the economics of the transaction.
1. Same card
Same card should be evaluated in the context of the exact card, collecting goal, grading company, market and total cost. Record what is known, separate official information from seller claims, and use conservative outcomes when money is involved.
2. Same grade
Same grade should be evaluated in the context of the exact card, collecting goal, grading company, market and total cost. Record what is known, separate official information from seller claims, and use conservative outcomes when money is involved.
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3. Same company
Same company should be evaluated in the context of the exact card, collecting goal, grading company, market and total cost. Record what is known, separate official information from seller claims, and use conservative outcomes when money is involved.
4. Recent date
Recent date should be evaluated in the context of the exact card, collecting goal, grading company, market and total cost. Record what is known, separate official information from seller claims, and use conservative outcomes when money is involved.
5. Real completed transaction
Real completed transaction should be evaluated in the context of the exact card, collecting goal, grading company, market and total cost. Record what is known, separate official information from seller claims, and use conservative outcomes when money is involved.
6. Outlier control
Outlier control should be evaluated in the context of the exact card, collecting goal, grading company, market and total cost. Record what is known, separate official information from seller claims, and use conservative outcomes when money is involved.
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Two slabs can show the same player and numerical grade while representing entirely different markets. Record each comparable sale before deciding on a listing price.
- Match year, set, card number, parallel or variation, autograph status, grading service and grade.
- Exclude sales with different card versions, damaged holders, questionable authenticity or unclear completion.
- Account for marketplace fees, shipping, timing and market volatility.
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Affiliate disclosure: We may earn a commission from qualifying eBay purchases. Listings are seller claims, not authentication, condition verification, or evidence of a completed sale.