The Lt. Surge's Raichu (11 / 132) card can be found in the Gym Challenge Unlimited set.
Recently sold 12 times and based on those sales is worth around £33.04.
Currently, there are 13 open listings for this card on ebay.
This card sells in the range of £23.10 to £42.98, making it quite stable.
This Rare Holo card was illustrated by Ken Sugimori.