Steelix #150 from Mega Evolution is a reverse holo illustration_rare card that currently sells for about $8.18 ungraded, with graded copies ranging from $10.00 at grade 7 to $64.81 at grade 10. A grade 10 copy sells for around $64.81, about 7.9× the $8.18 raw price, so high-grade copies are worth grading.