Jolteon VMAX #SWSH184 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $68.72 ungraded, with graded copies ranging from $49.00 at grade 7 to $950 at grade 10. A grade 10 copy sells for around $950, about 14× the $68.72 raw price, so high-grade copies are worth grading.