Greninja ex #148 from 30th Celebration is a illustration_rare card that currently sells for about $20.74 ungraded, with graded copies ranging from $36.73 at grade 9 to $132 at grade 10. TCGrader's AI has graded 3 copies of Greninja ex (30th Celebration), averaging 9.3 overall. 100% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $132, about 6.4× the $20.74 raw price, so high-grade copies are worth grading.