Questions about CMSs

Hi, I'm new to CMSs and developing tools like that, i was wondering if anyone could answer any of my questions below.


1. How much is a custom CMS worth? (in your opinion)

2. Can Joloma or any of those larger CMSs be sized down to fit into your design (like how cutenews works)

3. Do you know any CMS's that are small like cutenews except use MySQL.

4. Can you make a custom CMS?

This is what i how i want my CMS to work.

Someone clicks the articles link in my navigation and they see..

Categories : Category 1 Category 2 Category 3 Category 4

Then they click a category and they see...

Catagory Name: Article 1 Article 2 Article 3 Article 4 Article 5