Riolu #BW33 from BW Black Star Promos is a reverse holo promo card that currently sells for about $12.55 ungraded, with graded copies ranging from $63.59 at grade 9 to $99.99 at grade 10. A grade 10 copy sells for around $99.99, about 8× the $12.55 raw price, so high-grade copies are worth grading.