Heatran LV.X #DP31 from DP Black Star Promos is a reverse holo promo card that currently sells for about $16.41 ungraded, with graded copies ranging from $42.00 at grade 7 to $359 at grade 10. A grade 10 copy sells for around $359, about 22× the $16.41 raw price, so high-grade copies are worth grading.