Ho-Oh BREAK #XY154 from XY Black Star Promos is a reverse holo promo card that currently sells for about $14.41 ungraded, with graded copies ranging from $28.87 at grade 7 to $305 at grade 10. A grade 10 copy sells for around $305, about 21× the $14.41 raw price, so high-grade copies are worth grading.