M Mewtwo-EX #63 from BREAKthrough is a reverse holo holo_rare card that currently sells for about $24.00 ungraded, with graded copies ranging from $25.45 at grade 7 to $430 at grade 10. A grade 10 copy sells for around $430, about 18× the $24.00 raw price, so high-grade copies are worth grading.