Mewtwo-GX #31 from Hidden Fates is a reverse holo holo_rare card that currently sells for about $4.70 ungraded, with graded copies ranging from $12.18 at grade 7 to $72.50 at grade 10. A grade 10 copy sells for around $72.50, about 15× the $4.70 raw price, so high-grade copies are worth grading.