Mega Manectric ex #158 from Mega Evolution is a holo ultra_rare card that currently sells for about $2.99 ungraded, with graded copies ranging from $9.25 at grade 7 to $31.00 at grade 10. A grade 10 copy sells for around $31.00, about 10× the $2.99 raw price, so high-grade copies are worth grading.