Kingdra ex #12 from Shrouded Fable is a holo rare card that currently sells for about $1.12 ungraded, with graded copies ranging from $11.26 at grade 9 to $28.97 at grade 10. A grade 10 copy sells for around $28.97, about 26× the $1.12 raw price, so high-grade copies are worth grading.