Kingdra ex #12 from Shrouded Fable is a holo rare card that currently sells for about $1.23 ungraded, with graded copies ranging from $20.00 at grade 9 to $54.00 at grade 10. A grade 10 copy sells for around $54.00, about 44× the $1.23 raw price, so high-grade copies are worth grading.