Pokémon Tower #42 from Wizards Black Star Promos is a promo card that currently sells for about $10.22 ungraded, with graded copies ranging from $4.99 at grade 7 to $85.00 at grade 10. A grade 10 copy sells for around $85.00, about 8.3× the $10.22 raw price, so high-grade copies are worth grading.