Kaalia of the Vast #375 from Modern Horizons 3 is a full art foil / borderless mythic card that currently sells for about $29.58 ungraded, with graded copies ranging from $112 at grade 9 to $540 at grade 10. A grade 10 copy sells for around $540, about 18× the $29.58 raw price, so high-grade copies are worth grading.