Gym Badge #XY203 from XY Black Star Promos is a reverse holo promo card that currently sells for about $12.23 ungraded, with graded copies ranging from $8.50 at grade 7 to $115 at grade 10. A grade 10 copy sells for around $115, about 9.4× the $12.23 raw price, so high-grade copies are worth grading.