look at the pricing for go daddy
Why not start with them? They're an established, reliable company that has good support. I wouldn't use their hosting, but I do use their domain registration services and have for a very long time.
Go Daddy's registration for initial domain names are more expensive if you had seen my original links post here it shows you where you can register a domain name with register.com and it was .50 fifty cents to register.. and they are more reliable and dependable then go daddy.