What do I have to pay for “free” software?

The short answer is you probably don’t. Red Hat is one of many Linux distributions that allow free download, so if you have a high-bandwidth Internet connection, you can slurp down the files, burn some installation CDs, and install the software without paying one red cent. Many distributions are available on CDs from third parties who
charge less than $5 each. Some people prefer to pay for support or to buy boxed versions of the software, either to support the company whose product they use, or to ensure that they get timely answers to their questions. Free Software does not mean you’re entitled to have it without paying for it, but it does mean that if someone is entitled to have it, they can give it to you if they wish.