Team Rocket's Mewtwo ex #231 from Destined Rivals is a holo illustration_rare card that currently sells for about $348 ungraded, with graded copies ranging from $315 at grade 7 to $1,020 at grade 10. TCGrader's AI has graded 39 copies of Team Rocket's Mewtwo ex (Destined Rivals), averaging 9 overall. 79% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $1,020, about 2.9× the $348 raw price, so high-grade copies are worth grading.