Vaporeon ex #149 from Prismatic Evolutions is a holo illustration_rare card that currently sells for about $203 ungraded, with graded copies ranging from $150 at grade 7 to $776 at grade 10. TCGrader's AI has graded 23 copies of Vaporeon ex (Prismatic Evolutions), averaging 8.8 overall. 61% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $776, about 3.8× the $203 raw price, so high-grade copies are worth grading.