Infernape LV.X #DP10 from DP Black Star Promos is a reverse holo promo card that currently sells for about $22.27 ungraded, with graded copies ranging from $77.50 at grade 7 to $591 at grade 10. A grade 10 copy sells for around $591, about 27× the $22.27 raw price, so high-grade copies are worth grading.