Mewtwo #10 from Base Set 2 is a holo holo_rare card that currently sells for about $31.52 ungraded, with graded copies ranging from $90.00 at grade 7 to $190 at grade 10. TCGrader's AI has graded 30 copies of Mewtwo (Base Set 2), averaging 7 overall. A grade 10 copy sells for around $190, about 6× the $31.52 raw price, so high-grade copies are worth grading.