Yamper #99 from Phantasmal Flames is a reverse holo illustration_rare card that currently sells for about $3.95 ungraded, with graded copies ranging from $9.74 at grade 7 to $66.00 at grade 10. A grade 10 copy sells for around $66.00, about 17× the $3.95 raw price, so high-grade copies are worth grading.