Diamond Mare #231 from Core Set 2019 is a uncommon card that currently sells for about $2.20 ungraded and around $47.40 at grade 10. A grade 10 copy sells for around $47.40, about 22× the $2.20 raw price, so high-grade copies are worth grading.
Price by Grade
Recent market prices for graded copies of Diamond Mare
Grade
Market Price
vs Raw
💎 10
$47.40
22×
Raw (ungraded)
$2.20
1×
Worth grading? A grade 10 copy sells for around $47.40, about 22× the $2.20 raw price, so high-grade copies are worth grading.