Poltchageist #171 from Twilight Masquerade is a holo illustration_rare card that currently sells for about $5.99 ungraded, with graded copies ranging from $24.05 at grade 9 to $62.58 at grade 10. A grade 10 copy sells for around $62.58, about 10× the $5.99 raw price, so high-grade copies are worth grading.