Mewtwo-EX #163 from BREAKthrough is a rare card that currently sells for about $122 ungraded, with graded copies ranging from $184 at grade 7 to $14,800 at grade 10. TCGrader's AI has graded 4 copies of Mewtwo-EX (BREAKthrough), averaging 7.4 overall. A grade 10 copy sells for around $14,800, about 121× the $122 raw price, so high-grade copies are worth grading.