I have 4 catahoulas and do know the strong willed, intelligent mind of these dogs. I do not breed. there are several good sites to learn about the catahoulas.
The previous post for Tumblin' Run Catahoulas is a very well respected owner of Catahoulas, Their dogs are some of the best lines available.
There are pups out there for less than Suz quoted, you can look on the classified on BayDog Online. I prefer that you do go search through the catahoula rescue boards first.
And do a search for "Catahoula Leopard.com"(catahouligans) and look thru that website for good info on owning a 'houla.