Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 Price Guide
Basketball · Basketball Cards 2018 Panini Contenders · Released 2018
Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 (Basketball Cards 2018 Panini Contenders) is currently worth $54.50 raw (near mint) (as of Sep 3, 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.
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Current prices
Raw (ungraded)
| Ungraded | $54.50 |
Graded — grade ladder
Last updated 2026-09-03 · Source: the PriceCharting price guide
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Is it worth grading?
Worth grading — even a PSA 9 beats raw
A Grade 9.5 Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 sells for $385 against $54.50 raw: a $331 spread, 7.1× the ungraded price. Even a PSA 9 ($350) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
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 Playoff] #137 — frequently asked
How much is Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 (Basketball Cards 2018 Panini Contenders) worth?
As of Sep 3, 2026, Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 (Basketball Cards 2018 Panini Contenders): an ungraded near-mint copy sells for about $54.50, a Grade 9.5 sells for about $385, a PSA 9 for about $350. Values come from the PriceCharting price guide and are refreshed weekly.
Is Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 worth grading?
A Grade 9.5 Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 sells for $385 against $54.50 raw: a $331 spread, 7.1× the ungraded price. Even a PSA 9 ($350) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
Is Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 going up or down in value?
Michael Porter Jr. [Ball at Waist Autograph Playoff] #137 (Basketball Cards 2018 Panini Contenders) is up 0% over the last 30 days (raw market). Short-term moves on individual cards are noisy — check the price history above for the trend.
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.