Pikachu V-UNION #SWSH139 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $9.66 ungraded, with graded copies ranging from $10.18 at grade 7 to $135 at grade 10. A grade 10 copy sells for around $135, about 14× the $9.66 raw price, so high-grade copies are worth grading.