Reshiram #XY74 from XY Black Star Promos is a reverse holo promo card that currently sells for about $28.47 ungraded, with graded copies ranging from $49.00 at grade 7 to $528 at grade 10. A grade 10 copy sells for around $528, about 19× the $28.47 raw price, so high-grade copies are worth grading.