Dark Sylveon V #SWSH134 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $8.27 ungraded, with graded copies ranging from $17.11 at grade 7 to $28.50 at grade 10. A grade 10 copy sells for around $28.50, about 3.4× the $8.27 raw price, so high-grade copies are worth grading.