Michael Porter Jr. [Ball at Waist Autograph Premium] #137 Price Guide
Basketball · Basketball Cards 2018 Panini Contenders · Released 2018
Michael Porter Jr. [Ball at Waist Autograph Premium] #137 (Basketball Cards 2018 Panini Contenders) is currently worth $41.49 raw (near mint) and $108 in PSA 10 (as of Jul 11, 2026). Values come from the PriceCharting price guide and are refreshed weekly. Grading is the single biggest value lever — check the raw-to-PSA-10 gap below, then scan your copy to see if its centering makes the grade.
Current prices
Raw (ungraded)
| Ungraded | $41.49 |
Graded — grade ladder
| Grade | PSA | CGC | BGS | SGC | Graded |
|---|---|---|---|---|---|
| 10 | $108 | $65.00 | $140 | $65.00 | — |
| 9.5 | — | — | — | — | $58.00 |
| 9 | — | — | — | — | $52.45 |
Last updated 2026-07-11 · Source: the PriceCharting price guide
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Is it worth grading?
Worth grading only if it gems
A PSA 10 Michael Porter Jr. [Ball at Waist Autograph Premium] #137 brings $108 versus $41.49 raw — a $66.03 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($52.45) only about breaks even after fees, so the case rests on gemming.
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
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Michael Porter Jr. [Ball at Waist Autograph Premium] #137 — frequently asked
How much is Michael Porter Jr. [Ball at Waist Autograph Premium] #137 (Basketball Cards 2018 Panini Contenders) worth?
As of Jul 11, 2026, Michael Porter Jr. [Ball at Waist Autograph Premium] #137 (Basketball Cards 2018 Panini Contenders): an ungraded near-mint copy sells for about $41.49, a PSA 10 sells for about $108, a PSA 9 for about $52.45. Values come from the PriceCharting price guide and are refreshed weekly.
How much is a PSA 10 Michael Porter Jr. [Ball at Waist Autograph Premium] #137 worth?
As of Jul 11, 2026, a PSA 10 (Gem Mint) Michael Porter Jr. [Ball at Waist Autograph Premium] #137 (Basketball Cards 2018 Panini Contenders) sells for about $108, compared with $41.49 for a raw near-mint copy.
Is Michael Porter Jr. [Ball at Waist Autograph Premium] #137 worth grading?
A PSA 10 Michael Porter Jr. [Ball at Waist Autograph Premium] #137 brings $108 versus $41.49 raw — a $66.03 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($52.45) only about breaks even after fees, so the case rests on gemming.
Where do these Basketball card prices come from?
Prices are the PriceCharting price guide, refreshed weekly. Raw values reflect near-mint (NM) ungraded copies; graded values are per grading company and grade.
Is your basketball card centered well enough to grade?
Centering makes or breaks a PSA 10. Scan any card with Midpoint to measure its exact centering, get a grade estimate, and see what your copy is actually worth.
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