There are many things that revolve around domain registration. Not only do you need to know where to register a domain but you might want to check out what you can do with your domains that you do not use. There are a lot of people who can get domains that are used by other people if they are willing to sell it. It might cost less or more. It would cost less if the person has no use for it and would rather not waste their money. The domains that cost more are more valuable ones that have page rank or they have traffic going to them already or they might even just be a domain name that is ranked well for it’s keyword. These domains are more commonly sold by people and if you are willing to invest in good domains, do that if you want to invest in good domains to sell off later.