Phyrexian Metamorph #61 from Double Masters is a rare card that currently sells for about $24.49 ungraded, with graded copies ranging from $20.50 at grade 9 to $23.00 at grade 9.5. A grade 9.5 copy sells for around $23.00 vs $24.49 raw. That's a modest premium, so grading only pays off for near-perfect copies.