Galarian Meowth #141 from 30th Celebration is a illustration_rare card that currently sells for about $6.50 ungraded, with graded copies ranging from $20.05 at grade 9 to $9.50 at grade 10. A grade 10 copy sells for around $9.50 vs $6.50 raw. That's a modest premium, so grading only pays off for near-perfect copies.