part of my already purchased Creative cloud software?

[sandran37503836]

I have photoshop, illustrator and indesign together in my 599.00/year package. Is animate an addtional fee to get, how much and how do I add it?

[Joseph Labrecque]

If you have the "all apps" package... then you have Animate access as well - yes. 

Open your CC Desktop app and install it: