Mew #1 from Southern Islands is a common card that currently sells for about $364 ungraded, with graded copies ranging from $913 at grade 7 to $85,001 at grade 10. TCGrader's AI has graded 8 copies of Mew (Southern Islands), averaging 7.1 overall. A grade 10 copy sells for around $85,001, about 234× the $364 raw price, so high-grade copies are worth grading.