Team Magma's Mightyena #19 from Double Crisis is a reverse holo common card that currently sells for about $2.40 ungraded, with graded copies ranging from $8.19 at grade 9 to $51.09 at grade 10. A grade 10 copy sells for around $51.09, about 21× the $2.40 raw price, so high-grade copies are worth grading.