Crobat BREAK #XY181 from XY Black Star Promos is a reverse holo promo card that currently sells for about $5.99 ungraded, with graded copies ranging from $8.50 at grade 7 to $83.22 at grade 10. A grade 10 copy sells for around $83.22, about 14× the $5.99 raw price, so high-grade copies are worth grading.