Dark Slowbro #12 from Team Rocket is a holo holo_rare card that currently sells for about $38.85 ungraded, with graded copies ranging from $55.00 at grade 7 to $1,600 at grade 10. A grade 10 copy sells for around $1,600, about 41× the $38.85 raw price, so high-grade copies are worth grading.