Crazy Bird Headbanging Windmill

Cacatuas (don´t know how it´s called in english, but I believe they´re from Australia) are very expensive here. A cheap one is like US$ 5.000. My friend has a calopsita (don´t know the name in english) that´s similar, but much smaller and cheaper. It also dances, has a kickass "hair" and speaks. Funny birds. I would like owning one if I didn´t had a killer cat.