Kangaskhan-EX #78 from Flashfire is a reverse holo holo_rare card that currently sells for about $2.45 ungraded, with graded copies ranging from $12.50 at grade 7 to $4.03 at grade 10. A grade 10 copy sells for around $4.03 vs $2.45 raw. That's a modest premium, so grading only pays off for near-perfect copies.