Koga's Ditto #10 from Gym Challenge is a holo holo_rare card that currently sells for about $35.00 ungraded, with graded copies ranging from $49.00 at grade 7 to $64.99 at grade 10. A grade 10 copy sells for around $64.99 vs $35.00 raw. That's a modest premium, so grading only pays off for near-perfect copies.