Best for booking unavailable domain names in advance (prices are based on specific search results).

BuyDomain.com offers domain name registration services including single domain registration, bulk domain registration and domain transfer.

All domains are offered along with domain redirection and a cloaking feature that sends users from all the domains you own to your website. You also get a “Domain Lockdown” feature used to prevent accidental or intentional transfer of ownership of your domain. This feature also prevents anyone from redirecting your nameservers.

BuyDomain also allows you to manage your DNS records, FTP, subdomains, email, and other things in one control panel. You can even track the status of your domains and get instant alerts.

This registrar also offers the ability to automatically renew your domains and hosting plans before the expiration date.
Benefits of BuyDomain:

Buy multiple domains at once to save money.
Domain transfers are free and automated.
You can also register Internationalized Domain Names (IDNs – Internalized Domain Names).
Reserve unavailable domain names in advance at special prices.

Cost:

The search tool adjusts prices based on your search.