The Jolteon (23 / 100) card can be found in the Majestic Dawn set.
Recently sold 5 times and based on those sales is worth around £3.00.
Currently, there are 5 open listings for this card on ebay.
This card sells in the range of £1.97 to £4.03, making it very stable.
This Rare card was illustrated by Midori Harada.