Regigigas LV.X #DP30 from DP Black Star Promos is a reverse holo promo card that currently sells for about $12.55 ungraded, with graded copies ranging from $29.50 at grade 7 to $283 at grade 10. A grade 10 copy sells for around $283, about 23× the $12.55 raw price, so high-grade copies are worth grading.