Dragalge #XY10 from XY Black Star Promos is a reverse holo promo card that currently sells for about $10.33 ungraded, with graded copies ranging from $7.52 at grade 7 to $92.47 at grade 10. A grade 10 copy sells for around $92.47, about 9× the $10.33 raw price, so high-grade copies are worth grading.