The Houndoom (15 / 147) card can be found in the Aquapolis set.
Recently sold 2 times and based on those sales is worth around £6.08.
Currently, there are 15 open listings for this card on ebay.
This card sells in the range of £5.61 to £6.55, making it very stable.
This Rare card was illustrated by Hajime Kusajima.