The Umbreon V (188 / 203) card can be found in the Evolving Skies set.
Recently sold 9 times and based on those sales is worth around £19.00.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £12.87 to £25.13, making it quite stable.
This is a Rare Ultra card.
The fact that it is a V card makes it one of the more valuable cards.