Psychic Energy #119 from HeartGold & SoulSilver is a reverse holo common card that currently sells for about $28.50 ungraded, with graded copies ranging from $18.31 at grade 7 to $32.00 at grade 10. A grade 10 copy sells for around $32.00 vs $28.50 raw. That's a modest premium, so grading only pays off for near-perfect copies.