M Mewtwo-EX #64 from BREAKthrough is a reverse holo holo_rare card that currently sells for about $23.99 ungraded, with graded copies ranging from $35.00 at grade 7 to $353 at grade 10. A grade 10 copy sells for around $353, about 15× the $23.99 raw price, so high-grade copies are worth grading.