Darumaka #015 from Phantasmal Flames is a reverse holo common card that currently sells for about $0.24 ungraded, with graded copies ranging from $10.36 at grade 9 to $31.20 at grade 10. A grade 10 copy sells for around $31.20, about 130× the $0.24 raw price, so high-grade copies are worth grading.