Team Rocket's Petrel #226 from Destined Rivals is a ultra_rare card that currently sells for about $4.74 ungraded, with graded copies ranging from $5.50 at grade 7 to $37.00 at grade 10. A grade 10 copy sells for around $37.00, about 7.8× the $4.74 raw price, so high-grade copies are worth grading.