Mewtwo-GX #31 from Hidden Fates is a holo holo_rare card that currently sells for about $7.56 ungraded, with graded copies ranging from $14.00 at grade 7 to $123 at grade 10. TCGrader's AI has graded 3 copies of Mewtwo-GX (Hidden Fates), averaging 8.3 overall. A grade 10 copy sells for around $123, about 16× the $7.56 raw price, so high-grade copies are worth grading.