Mega Abomasnow ex #157 from Mega Evolution is a holo ultra_rare card that currently sells for about $2.49 ungraded, with graded copies ranging from $17.75 at grade 9 to $43.50 at grade 10. A grade 10 copy sells for around $43.50, about 18× the $2.49 raw price, so high-grade copies are worth grading.