Unfezant #150 from Black Bolt is a holo illustration_rare card that currently sells for about $29.67 ungraded, with graded copies ranging from $16.00 at grade 7 to $40.00 at grade 10. A grade 10 copy sells for around $40.00 vs $29.67 raw. That's a modest premium, so grading only pays off for near-perfect copies.