The Dark Vaporeon (9 / 110) card can be found in the Legendary Collection set.
Recently sold 10 times and based on those sales is worth around £84.42.
Currently, there are 7 open listings for this card on ebay.
This card sells in the range of £65.99 to £102.85, making it quite volatile.
This Rare Holo card was illustrated by Mitsuhiro Arita.