Sylveon #SWSH211 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $6.12 ungraded, with graded copies ranging from $4.77 at grade 7 to $210 at grade 10. A grade 10 copy sells for around $210, about 34× the $6.12 raw price, so high-grade copies are worth grading.