Yamper #099 from Phantasmal Flames is a holo illustration_rare card that currently sells for about $3.95 ungraded, with graded copies ranging from $11.82 at grade 7 to $71.00 at grade 10. A grade 10 copy sells for around $71.00, about 18× the $3.95 raw price, so high-grade copies are worth grading.