Regigigas #DP40 from DP Black Star Promos is a reverse holo promo card that currently sells for about $13.38 ungraded, with graded copies ranging from $90.00 at grade 9 to $297 at grade 10. A grade 10 copy sells for around $297, about 22× the $13.38 raw price, so high-grade copies are worth grading.