M Mewtwo-EX #63 from BREAKthrough is a holo holo_rare card that currently sells for about $28.00 ungraded, with graded copies ranging from $58.85 at grade 7 to $2,499 at grade 10. A grade 10 copy sells for around $2,499, about 89× the $28.00 raw price, so high-grade copies are worth grading.