Kingdra δ #10 from Holon Phantoms is a reverse holo holo_rare card that currently sells for about $22.75 ungraded, with graded copies ranging from $29.00 at grade 7 to $39.99 at grade 10. A grade 10 copy sells for around $39.99 vs $22.75 raw. That's a modest premium, so grading only pays off for near-perfect copies.