Zapdos #157 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $2.46 ungraded, with graded copies ranging from $8.00 at grade 7 to $50.00 at grade 10. A grade 10 copy sells for around $50.00, about 20× the $2.46 raw price, so high-grade copies are worth grading.