Garchomp & Giratina-GX #228 from Unified Minds is a rare card that currently sells for about $59.99 ungraded, with graded copies ranging from $52.00 at grade 7 to $100 at grade 10. A grade 10 copy sells for around $100 vs $59.99 raw. That's a modest premium, so grading only pays off for near-perfect copies.