Savai Triome #312 from Ikoria: Lair of Behemoths is a showcase foil / borderless rare card that currently sells for about $18.82 ungraded, with graded copies ranging from $9.50 at grade 9 to $10.00 at grade 9.5. A grade 9.5 copy sells for around $10.00 vs $18.82 raw. That's a modest premium, so grading only pays off for near-perfect copies.