The Charizard & Braixen GX (212 / 236) card can be found in the Cosmic Eclipse set.
Recently sold 8 times and based on those sales is worth around £23.34.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £14.02 to £32.66, making it quite stable.
This Rare Ultra card was illustrated by 5ban Graphics.
The fact that it is a GX card makes it one of the more valuable cards.