The Magikarp (52 / 110) card can be found in the Legendary Collection set.
Recently sold 6 times and based on those sales is worth around £52.38.
Currently, there are 4 open listings for this card on ebay.
This card sells in the range of £44.18 to £60.58, making it quite stable.
This Uncommon card was illustrated by Mitsuhiro Arita.