Team Rocket's Mewtwo ex #240 from Destined Rivals is a reverse holo hyper_rare card that currently sells for about $52.25 ungraded, with graded copies ranging from $41.00 at grade 7 to $138 at grade 10. A grade 10 copy sells for around $138, about 2.6× the $52.25 raw price, so high-grade copies are worth grading.