The Latias & Latios GX (170 / 181) card can be found in the Team Up set.
Recently sold 6 times and based on those sales is worth around £426.00.
Currently, there are 9 open listings for this card on ebay.
This card sells in the range of £90.78 to £761.22, making it highly volatile.
This Rare Ultra card was illustrated by Sanosuke Sakuma.
The fact that it is a GX card makes it one of the more valuable cards.