Once upon a time, if you wanted to register a domain name, you could only do it by visiting Network Solutions at http://www.networksolutions.com/ and paying them whatever they asked for, about $35.00 per year.
Then ICANN, http://www.icann.org/, The Internet Corporation for Assigned Names and Numbers (ICANN) that is the non-profit corporation that was formed to assume responsibility for the IP address space allocation, protocol parameter assignment, domain name system management, and root server system management functions previously performed under U.S. Government contract by IANA and other entities, decided to change the rules.