Xerneas ex #179 from Scarlet & Violet Promos is a reverse holo promo card that currently sells for about $1.81 ungraded, with graded copies ranging from $9.00 at grade 9 to $29.95 at grade 10. A grade 10 copy sells for around $29.95, about 17× the $1.81 raw price, so high-grade copies are worth grading.