Rocket's Mewtwo ex #99 from Team Rocket Returns is a holo holo_rare card that currently sells for about $690 ungraded, with graded copies ranging from $2,000 at grade 7 to $75,000 at grade 10. TCGrader's AI has graded 4 copies of Rocket's Mewtwo ex (Team Rocket Returns), averaging 8.1 overall. 50% scored 9 or higher, so a strong copy is achievable but far from guaranteed. A grade 10 copy sells for around $75,000, about 109× the $690 raw price, so high-grade copies are worth grading.