Mewtwo-GX #39 from Shining Legends is a holo holo_rare card that currently sells for about $8.00 ungraded, with graded copies ranging from $15.00 at grade 7 to $19.99 at grade 10. TCGrader's AI has graded 7 copies of Mewtwo-GX (Shining Legends), averaging 7.7 overall. A grade 10 copy sells for around $19.99, about 2.5× the $8.00 raw price, so high-grade copies are worth grading.