The Jolteon (6 / 100) card can be found in the Sandstorm set.
Recently sold 6 times and based on those sales is worth around £31.16.
Currently, there are 7 open listings for this card on ebay.
This card sells in the range of £11.97 to £50.35, making it quite volatile.
This Rare Holo card was illustrated by Atsuko Nishida.