Pikachu #XY89 from XY Black Star Promos is a reverse holo promo card that currently sells for about $9.81 ungraded, with graded copies ranging from $22.49 at grade 7 to $113 at grade 10. A grade 10 copy sells for around $113, about 12× the $9.81 raw price, so high-grade copies are worth grading.