Vaporeon #BW89 from BW Black Star Promos is a reverse holo promo card that currently sells for about $28.00 ungraded, with graded copies ranging from $43.76 at grade 7 to $588 at grade 10. A grade 10 copy sells for around $588, about 21× the $28.00 raw price, so high-grade copies are worth grading.