Tropical Wind #DP05 from DP Black Star Promos is a reverse holo promo card that currently sells for about $1,595 ungraded, with graded copies ranging from $2,247 at grade 9 to $3,100 at grade 10. A grade 10 copy sells for around $3,100 vs $1,595 raw. That's a modest premium, so grading only pays off for near-perfect copies.