A lot!!! Mole, we aren't picking on you but try to type better. Note the use of the period. It comes in real handy when you want to end a thought and start a new one.
(Just teasing...)

I spent at least that on my CP, I have 2 8 way joysticks, a tornado spinner, a 3" HAPPS trackball, about 14 buttons, CPO overlay... I just bought a nother set of Leaf joysticks that will be putting on soon. I think all told I[m over at least 300.00. So I think what you have is about right...
What about the endcoder? You will need one of those unless you are going to hack a keyboard. And I hope those trackballs are USB, otherwise you'll need an Opti-Pac. That will add at least another $100 to the order...
Watch out though.....this hobby has a way of sucking up money...