The Vaporeon (33 / 144) card can be found in the Skyridge set.
Recently sold 2 times and based on those sales is worth around £91.12.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £83.87 to £98.37, making it quite stable.
This Rare card was illustrated by Naoyo Kimura.