Shaymin #XY188 from XY Black Star Promos is a reverse holo promo card that currently sells for about $5.32 ungraded, with graded copies ranging from $3.25 at grade 7 to $70.60 at grade 10. A grade 10 copy sells for around $70.60, about 13× the $5.32 raw price, so high-grade copies are worth grading.