I was surfing the web for carnivorous plants and come across a site bamaplants.com The site has a list of aquatic plants they sell. They are located in Andalusia. I've never done business with them so I can't speak on their plants. May be worth driving to see what they have to offer if your close to them.
I have ordered from them and everything went great. They even offer Assassin snails and olive nerites, and they have plans to have some shrimp soon.