The Jolteon Star (101 / 108) card can be found in the Power Keepers set.
Recently sold 11 times and based on those sales is worth around £184.22.
Currently, there are 8 open listings for this card on ebay.
This card sells in the range of £61.15 to £307.29, making it highly volatile.
This Rare Holo Star card was illustrated by Masakazu Fukuda.