Just curious how much it costs to build a website like the following examples and what its maintenance costs will be.
Examples: 1) http://www.sourcefire.com 2) http://www.towerswatson.com 3) http://www.iqbusiness.co.za 4) http://www.nikken.co.jp/en/

How much does the web design cost? What is the normal size of the website construction team? How long does the process take? What are the corresponding costs? Please also suggest the size of the maintenance team and the data management costs.

Any helpful feedback will be much appreciated. Thank you very much!

- Some curious newbie