Aurorus-EX #XY102 from XY Black Star Promos is a reverse holo promo card that currently sells for about $13.52 ungraded, with graded copies ranging from $28.99 at grade 7 to $150 at grade 10. A grade 10 copy sells for around $150, about 11× the $13.52 raw price, so high-grade copies are worth grading.