The Flareon (8 / 144) card can be found in the Skyridge set.
Recently sold 3 times and based on those sales is worth around £22.56.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £15.57 to £29.55, making it quite stable.
This Rare card was illustrated by Kyoko Umemoto.