Mewtwo-EX #54 from Legendary Treasures is a reverse holo holo_rare card that currently sells for about $9.98 ungraded, with graded copies ranging from $13.00 at grade 7 to $312 at grade 10. A grade 10 copy sells for around $312, about 31× the $9.98 raw price, so high-grade copies are worth grading.