Mew ex #152 from 30th Celebration is a illustration_rare card that currently sells for about $81.78 ungraded, with graded copies ranging from $297 at grade 9 to $900 at grade 10. TCGrader's AI has graded 86 copies of Mew ex (30th Celebration), averaging 9.1 overall. 86% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $900, about 11× the $81.78 raw price, so high-grade copies are worth grading.