Vivien, Monsters' Advocate #277 from Ikoria: Lair of Behemoths is a full art / borderless mythic card that currently sells for about $5.63 ungraded and around $46.00 at grade 10. A grade 10 copy sells for around $46.00, about 8.2× the $5.63 raw price, so high-grade copies are worth grading.