Vaporeon #168 from Scarlet & Violet Promos is a reverse holo promo card that currently sells for about $1.96 ungraded, with graded copies ranging from $18.00 at grade 9 to $40.00 at grade 10. A grade 10 copy sells for around $40.00, about 20× the $1.96 raw price, so high-grade copies are worth grading.