M Gardevoir-EX #79 from Steam Siege is a reverse holo holo_rare card that currently sells for about $16.70 ungraded, with graded copies ranging from $23.00 at grade 7 to $170 at grade 10. A grade 10 copy sells for around $170, about 10× the $16.70 raw price, so high-grade copies are worth grading.