The Magneton (H18) card can be found in the Skyridge set.
Recently sold 2 times and based on those sales is worth around £109.49.
Currently, there are 2 open listings for this card on ebay.
This card sells in the range of £107.35 to £111.63, making it very stable.
This Rare Holo card was illustrated by Hajime Kusajima.