Mega Gardevoir ex #159 from Mega Evolution is a holo ultra_rare card that currently sells for about $5.74 ungraded, with graded copies ranging from $11.00 at grade 7 to $37.00 at grade 10. A grade 10 copy sells for around $37.00, about 6.4× the $5.74 raw price, so high-grade copies are worth grading.