Rayquaza #SWSH029 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $10.00 ungraded, with graded copies ranging from $17.59 at grade 7 to $370 at grade 10. A grade 10 copy sells for around $370, about 37× the $10.00 raw price, so high-grade copies are worth grading.