Jolteon V #SWSH183 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $67.82 ungraded, with graded copies ranging from $49.80 at grade 7 to $1,426 at grade 10. A grade 10 copy sells for around $1,426, about 21× the $67.82 raw price, so high-grade copies are worth grading.