The Magneton (19 / 144) card can be found in the Skyridge set.
Recently sold 3 times and based on those sales is worth around £6.58.
Currently, there are 2 open listings for this card on ebay.
This card sells in the range of £4.98 to £8.18, making it very stable.
This Rare card was illustrated by Hajime Kusajima.