I will do keyword based best expired domain research with high metrics by spamzilla

Brand new domains will cost about $10-15 a year, depending on registrar and TLD. Registrar is the company like NameCheap, Siteground, GoDaddy, BlueHost, etc.

Expired domains are domains that have been registered by individuals, businesses, or organizations, but aren't renewed after the contract ends, or are deliberately terminated. That means that they are available for re-registration.

1. Start Your Own Website. ... 2. Redirect an Expired Domain to Your Site. ... 3. Buy the Domain to Source Links. ... 4. Flip the Domain. ... 5. Build a PBN (Private Blog Network)

Usually, a domain name is not available for re-registration as soon as it expires. Most registrars allow a grace period that can be as short as one or two weeks or as long as a year for registrants to renew expired domain names. Once it's released, you can register the domain name.

Another main reason to buy an expired domain is the value it has due to other sites linking to it. Use a backlink checker to check the quality of an expired domain's backlinks.