Jolteon #169 from Scarlet & Violet Promos is a reverse holo promo card that currently sells for about $1.93 ungraded, with graded copies ranging from $7.63 at grade 9 to $59.99 at grade 10. A grade 10 copy sells for around $59.99, about 31× the $1.93 raw price, so high-grade copies are worth grading.