Pikachu #SM227 from SM Black Star Promos is a reverse holo promo card that currently sells for about $19.93 ungraded, with graded copies ranging from $20.57 at grade 7 to $1,084 at grade 10. A grade 10 copy sells for around $1,084, about 54× the $19.93 raw price, so high-grade copies are worth grading.