Mew ★ δ #101 from Dragon Frontiers is a reverse holo holo_rare card that currently sells for about $867 ungraded, with graded copies ranging from $2,677 at grade 7 to $15,000 at grade 10. A grade 10 copy sells for around $15,000, about 17× the $867 raw price, so high-grade copies are worth grading.