Massacre Wurm #114 from Core Set 2021 is a foil mythic card that currently sells for about $17.59 ungraded, with graded copies ranging from $24.99 at grade 9 to $27.00 at grade 9.5. A grade 9.5 copy sells for around $27.00 vs $17.59 raw. That's a modest premium, so grading only pays off for near-perfect copies.