Volcarona #22 from Dark Explorers is a reverse holo holo_rare card that currently sells for about $2.22 ungraded, with graded copies ranging from $41.00 at grade 9 to $56.37 at grade 10. A grade 10 copy sells for around $56.37, about 25× the $2.22 raw price, so high-grade copies are worth grading.