Mewtwo-EX #164 from BREAKthrough is a rare card that currently sells for about $118 ungraded, with graded copies ranging from $212 at grade 7 to $9,101 at grade 10. TCGrader's AI has graded 6 copies of Mewtwo-EX (BREAKthrough), averaging 7.6 overall. A grade 10 copy sells for around $9,101, about 77× the $118 raw price, so high-grade copies are worth grading.