The Salamence ex (103 / 107) card can be found in the Deoxys set.
Recently sold 2 times and based on those sales is worth around £33.20.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £19.42 to £46.98, making it quite volatile.
This Rare Holo Ex card was illustrated by Hikaru Koike.
The fact that it is a EX card makes it one of the more valuable cards.