One big tip is to find a domain that someone can make money with. If you only owned that 1 domain, could you earn a living? This helps you focus on the top 1% of domains and ignore the junk that you will struggle to resell. You must get this right because domaining can bankrupt you fast if you buy the wrong domains. Godaddy is also great for grabbing expiring domains for much less.
Yes, buying existing domain names can be profitable too. Existing domains with a potential for profit can be found using Sedo. Make sure you pick domain names that have good traffic, backlinks and Google PageRank under 17 characters. Also, steer clear of existing domain names containing special characters or numbers because they are not likely to be sold.
Karn Jajoo heads the premium names program for Radix’s domain extensions: .WEBSITE, .PRESS, .HOST, .SPACE, .SITE, .TECH, .ONLINE, .STORE & .FUN. Radix has made more than $1.75 million in premium domains revenue in 2017 thus far, including the biggest nTLD sale of all times — casino.online, and the sale of business.site to Google for it’s free website builder, Google My Business. Karn considers himself a new gTLD evangelist and has had articles published in The Next Web, Website Magazine, & CMO.com.
I have an interesting twist on how I have done it in the past. I will buy a domain and use it as a development domain for blog posts and things of that nature. Then over time it will gain DA and PR. Then I will sell it off and buy another development domain and start the process over. Not quite the process you mentioned, but it works. People will link to the development site to show things off as well sometimes, so that helps.
Now, a lot of times these great domains that have pending delete will get snapped up in a flash. Okay? You want to use the same system that’s 500,000 domains so you can always sort them by whatever you want to do to make sure you’re only looking at quality domains and look at the link profile the same way. Once you find one that you like, you can’t just sit on your computer at Go Daddy and wait for it drop on 6/14 and expect to get it because there’s going to be a lot of other people gunning for that domain. You actually have to use a service like Snap Name.
If you buy a dropped domain from Snap or Namejet, the backlinks seem to be worthless for SEO. They are valuable for traffic if it's targeted to your site. Go ahead and 301 redirect into your site because it's the traffic from the back links that is worth something. I use the Google URL builder to redirect these names so you can see the domain the traffic is coming from.
So how do you develop that instinct? NameBio maintains a database of over 500,000 historical domain sales (as of writing this post). They have interesting filtering features by which you can narrow down domains by price range, date sold, keywords and more. Simply sifting through the listings on NameBio long enough will quickly develop your domain appraisal “instinct”.