Mewtwo #10 from Base Set is a holo rare card that currently sells for about $25.24 ungraded, with graded copies ranging from $95.00 at grade 7 to $199 at grade 10. TCGrader's AI has graded 22 copies of Mewtwo (Base Set), averaging 6.5 overall. A grade 10 copy sells for around $199, about 7.9× the $25.24 raw price, so high-grade copies are worth grading.