Is Greg Maddux #SD31 worth grading?
Baseball · Baseball Cards 1998 SP Authentic Sheer Dominance · full price guide →
Strong grading candidate — 53× premium in Grade 7
A Grade 7 Greg Maddux #SD31 sells for $95.00 against $1.80 raw: a $93.20 spread, 53× the ungraded price. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
- Raw (NM)
- $1.80
- Grade 7
- $95.00
- Gem premium
- 53×
- As of
- Sep 4, 2026
Break-even by outcome and fee
| If it comes back… | Sells for | Economy / bulk (~$25.00) | Standard (~$50.00) | Express (~$150) |
|---|---|---|---|---|
| Gem — Grade 7 | $95.00 | +$68.20 | +$43.20 | −$56.80 |
Net = sale price − $1.80 raw value − fee. Fee tiers are illustrative; plug your grader's current price into the calculator below.
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Other 1998 SP Authentic Sheer Dominance cards worth checking
Full set checklist →
![Ken Griffey Jr. [Gold] #SD1 1998 SP Authentic Sheer Dominance card](https://i.ebayimg.com/images/g/UeYAAeSwp~hqWVjM/s-l500.jpg)
![Sammy Sosa [Titanium] #SD29 1998 SP Authentic Sheer Dominance card](https://i.ebayimg.com/images/g/7FAAAeSwqpJq4HbS/s-l500.jpg)
![Pedro Martinez [Titanium] #SD24 1998 SP Authentic Sheer Dominance card](https://i.ebayimg.com/images/g/RdgAAOSwJtFmhFJE/s-l500.jpg)
Grading Greg Maddux #SD31 — FAQ
Is Greg Maddux #SD31 worth grading?
A Grade 7 Greg Maddux #SD31 sells for $95.00 against $1.80 raw: a $93.20 spread, 53× the ungraded price. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
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