Arceus V #SWSH306 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $3.99 ungraded, with graded copies ranging from $6.50 at grade 7 to $200 at grade 10. A grade 10 copy sells for around $200, about 50× the $3.99 raw price, so high-grade copies are worth grading.