Salamence-EX #XY170 from XY Black Star Promos is a reverse holo promo card that currently sells for about $11.61 ungraded, with graded copies ranging from $27.34 at grade 7 to $1,500 at grade 10. A grade 10 copy sells for around $1,500, about 129× the $11.61 raw price, so high-grade copies are worth grading.