Dark Slowbro #12 from Team Rocket is a 1st edition holo holo_rare card that currently sells for about $100 ungraded, with graded copies ranging from $95.50 at grade 7 to $3,551 at grade 10. A grade 10 copy sells for around $3,551, about 36× the $100 raw price, so high-grade copies are worth grading.