Raikou-GX #SM121 from SM Black Star Promos is a reverse holo promo card that currently sells for about $6.95 ungraded, with graded copies ranging from $13.00 at grade 7 to $90.50 at grade 10. A grade 10 copy sells for around $90.50, about 13× the $6.95 raw price, so high-grade copies are worth grading.