Hehe if I had no soul or conscious that would be my profession. Selling Ubuntu on CDs slightly cheaper than any Windows version
And Ubuntu is the # 1 preferred linux distro to check out.
I have had IT professionals give me Ubuntu books to learn with when I was in High School. My Linux classes in college heavily used Ubuntu and CentOS (Both are from the same realm and generally use the same sets of commands). Now that I have a job working in IT, the company I work with uses Ubuntu for their end-users as well as a server to provide services on the network.
Randomizer hit the nail on the head. You are essentially paying for support, which can saves headaches and your job depending on your needs. But if you are using it at home then don't pay. Google is free. As well as Tomshardware.com