The Raichu (83 / 90) card can be found in the Hs Undaunted set.
Recently sold 8 times and based on those sales is worth around £16.50.
Currently, there are 8 open listings for this card on ebay.
This card sells in the range of £10.68 to £22.32, making it quite stable.
This Rare Prime card was illustrated by Takashi Yamaguchi.