Iono #254 from Paldea Evolved is a ultra_rare card that currently sells for about $10.85 ungraded, with graded copies ranging from $18.62 at grade 9 to $59.99 at grade 10. A grade 10 copy sells for around $59.99, about 5.5× the $10.85 raw price, so high-grade copies are worth grading.