If you are already using an existing domain name, then you are all set. We will point that domain to your new auction platform as soon as you are ready.
If you don't have a domain name already, go get one! We recommend using enom.com, but there are many domain name registrars to choose from. Consider exploring names in the .bid, .co, and .net extensions. It's surprisingly easy and affordable to get a good name on a good extension this way.
If you want to read some more tips on choosing a domain name for your company, check out this article by Rand Fishkin on moz.com.