Mewtwo #10 from Base Set is a holo rare card that currently sells for about $22.62 ungraded, with graded copies ranging from $110 at grade 7 to $199 at grade 10. TCGrader's AI has graded 40 copies of Mewtwo (Base Set), averaging 6.8 overall. Only 5% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $199, about 8.8× the $22.62 raw price, so high-grade copies are worth grading.