The Lugia GX (227 / 214) card can be found in the Lost Thunder set.
Recently sold 16 times and based on those sales is worth around £104.92.
Currently, there are 9 open listings for this card on ebay.
This card sells in the range of £65.19 to £144.65, making it highly volatile.
This Rare Rainbow card was illustrated by PLANETA Igarashi.
The fact that it is a GX card makes it one of the more valuable cards.