Rocket's Mewtwo #14 from Gym Challenge is a holo holo_rare card that currently sells for about $117 ungraded, with graded copies ranging from $173 at grade 7 to $1,000 at grade 10. TCGrader's AI has graded 6 copies of Rocket's Mewtwo (Gym Challenge), averaging 7.2 overall. Only 17% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $1,000, about 8.6× the $117 raw price, so high-grade copies are worth grading.