Treecko #16 from Nintendo Black Star Promos is a holo promo card that currently sells for about $14.00 ungraded, with graded copies ranging from $21.00 at grade 7 to $1,099 at grade 10. A grade 10 copy sells for around $1,099, about 79× the $14.00 raw price, so high-grade copies are worth grading.