The Magnezone EX (101 / 106) card can be found in the Flashfire set.
Recently sold 8 times and based on those sales is worth around £3.73.
Currently, there are 4 open listings for this card on ebay.
This card sells in the range of £0.78 to £6.68, making it stable.
This Rare Ultra card was illustrated by Ryo Ueda.
The fact that it is a EX card makes it one of the more valuable cards.