1) pending delete auctions.  These are domains that were not renewed and are going through a pretty complicated drop process.  You can backorder these names at the auction venues and then each attempts to "catch" the dropping domain.  If one is successful you win the domain at $59 if you're the only one to backorder the name.  If more than one person backordered the domain a 3 day private auction is held.  Once the domain goes through the drop process, the back links have pretty much zero SEO benifit to the new domain owner.

Most domains traders, or resellers, buy hundreds of domain names. This way, the chances of hitting the jackpot are higher. But, this takes some up front money. You can start with a handful of names and work your way up. This is the best way to begin. You may also decide to purchase a name from another seller if you think that a name will be big enough.
When you see one that looks pretty good you can just click on the bid button and you’ll be taken to Go Daddy Auctions which shows some more information about the domain bidding process, how many people have bid, the traffic potential per month, the price which is now $12. How much time is left? You can make a bid. It’s based on the link profile and it’s relevancy, authority and your budget. This domain looks like a good bet for you.
It is much harder to sell names no one has heard of. Short names have the highest value — they are rare, easy to sell and bring substantial profit. Basic and common domain names, which can be relatable, or arouse interest in the market are the best. General names sell thick and fast and also bring considerably higher profit.  Names that are easy to spell will attract buyers, and provide good opportunity to make a decent profit. If you know you have a good domain in your hands, then you are likely to make good profit by selling it.
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These should be more than enough to get your domain in front of tons of potential buyers. If you did a good job picking an awesome domain, you should have no problem (eventually) selling it. You need to be very patient as it could take months or even more to land a decent deal. A lot of domainers sit on domains for years before actually selling them. This is why it’s best not to obsess over a domain and simply move on with buying and listing others (or going back to your day job if this is a side gig) once you've listed the initial one.
Many people think of domain buying and selling to be one of the easiest methods of making quick money. Perhaps, you may have heard of someone buying a domain name for under $3000 and then selling it for $25,000. A quick $22,000 profit! Such stories can be very motivating! And that sort of money does exchange hands (Go through 10 of the biggest domain name sales of all time!). But these deals don’t come as easy as they seem! Ask anyone who flips domains for a living and he/she’ll tell you the amount of hard work and skill that goes into it.
There is a common misconception that domains expire on their expiration date. If a domain registration is not renewed by its expiration date, the domain simply goes into "expired" status, which means all services are shut off. Typically, we provide a 35-day grace period during which the current holder can still renew it for the standard renewal fee. For more information please review our domain deletion policy.

Joe Styler serves as product manager for the aftermarket at GoDaddy. He’s responsible for marketplace products including any purchase, sale, or monetization of a domain name. During his nine-year tenure at GoDaddy Joe has served in a variety of directorial and supervisory roles. His passion is seeing his customers become successful in their business goals when using the aftermarket. He has been interested helping people with transactions on the Internet for more than 20 years. Joe received his B.A. from Moody Bible Institute in Chicago, and his Masters in Divinity from Gordon Conwell in Massachusetts.
  Since starting SEO back in 2009, it has become very difficult to rank brand new domains. Unless you are building a brand, it's highly recommended that you start every new money site with an expired domain. Additionally, if you're building a PBN, you should only consider using expired domains. The problem is good domains start at $50 a piece, and anyone charging less is either full of sh*t or selling garbage domains, and I mean that. If it sounds too good to be true, it probably is. DomCop has a great offer that all of you buying expired domains should consider. For the price of a couple domain names, you can use DomCop for a month, snag some excellent domain names, which would otherwise cost you thousands of dollars. If you're considering expired domain software and don't have the knowledge to program your own crawler, I'd lean towards DomCop.   
Think of ways that the domains you buy would be a valuable asset to the buyer. Picture someone who would benefit from buying the domain in a space you are very familiar with. If this was you and someone was trying to sell you this name, would it be beneficial for you to own? Be honest. If so, why? If not, why? Use those answers to refine your search for names.
In theory, you could technically acquire a domain for $10,000 and be able to sell it for $100,000. You could also acquire a domain for $10 and be able to sell it for $100,000, $10,000… or $100, you get the picture. Because of this, it’s hard to recommend a perfect starting budget because your strategy, experience, and the pace at which you learn will hugely affect your buying and selling decisions.