Raikou #HGSS19 from HGSS Black Star Promos is a reverse holo promo card that currently sells for about $19.95 ungraded, with graded copies ranging from $42.41 at grade 7 to $304 at grade 10. A grade 10 copy sells for around $304, about 15× the $19.95 raw price, so high-grade copies are worth grading.