Regarding my statement above, “Any domain name that reaches expired status and is not renewed by the owner will be auctioned by an auction service.”–it did overstretch. I’ve modified it to be: “A domain name that reaches expired status and is not renewed by the owner will be listed at an auction service (see FAQ for exception to this rule).” Then I added a FAQ to clarify. Please check my thinking:
This is not the case at GoDaddy Auctions, however. There, GoDaddy starts the auction before the domain names has fully expired and the registrant does have the ability to pay a one-time restoration fee to restore ownership. This is particularly frustrating to those bidding in the auction, as you may be the winning bidder and pay your winning bid price only to find out a few days later that it was restored. You then have to wait for a refund from GoDaddy.
The first is the link profile I and actually took this example because it looked like a pretty good choice. It’s from 2003. It has some links, some age and it’s in DMAS and looked at the link profile in DMAS. So, you just copy and paste the domain,  the home page it to here, click on the search links button and this will show you all the links to that site.
Next, some of these expired domain names have ranked in high authority sites that are ranked or had ranked themselves. Besides, some of these domain names are worth a fortune. For example, domain names sell for about ten to twenty dollars each. However, those that are the most sought after can go for over $ 2500 a month because they have lots of traffic back links or rankings.The last advantage is that you don’t have to spend much to find expired domains.
Here's an old post on search engine roundtable that claims google's policy is to discount previous backlink juice when a domain changes ownership.  I'm not convinced whether this is actually true or something Google says to discourage excessive domain buying / 301 redirecting for SEO benefit.  The comments above seem to give varying opinions on this matter. Would be great to get to the bottom of that one!
1. Some domain names don’t go to auction and are instead held by the registrar in their own portfolios (you called this “warehousing” by the registrar). This is probably less than 0.001% of the domain names….actually, probably even less. I suspect it would only be premium domain names with massive exact match local search quantities. Not surprisingly, I cannot find any information from registrars about their procedure, quantities of domains their keep, or ICANN’s rules (if any) about this.
What you really want to do first is scroll down to where it says, referring pages for anchor phrases. All that is is the anchor text distribution to that site. As you can see here this looks like a very natural link profile. Brand name, a product that they had, no text, URL, shopping cart, wireless government. These are the keywords that were related to what that site was about. Okay?

It will just go on and on and on endlessly, so that really is like a set and forget setting. Okay, now before I show you it in action, I'll just skim over some of these stats stuff. Here this is pretty self-explanatory really so that's the amount pages crawled so far, that's how many pages were crawling per minute, so once it's been running for a minute that that'll date and they'll update every minute after that. That is if the websites are blocking are crawl. Thatw how many websites currently are been crawled, so how many websites have been crawled. That's if we have it have it had any registrar errors, so we fired off some domains to see if they're available or not and there's been any errors in checking them it displays there.

Trust flow refers to the number of quality backlinks that a website has. If backlinks from websites that have a high domain and authority ranking point to your site; your website’s trust flow will increase. Trust flow is also measured on a scale of 1 to 100. If your website has a large number of backlinks, but they are not from trustworthy and reliable domains, your websites trust flow will be low. On the other hand, if you even have just a handful of backlinks to sites that search engines rank highly; your trust flow will increase.

You can easily find domains using the best metrics available from Ahrefs, Moz, Majestic, SEMRush, Similar Web, SEMrush, Domain Scope and Social Networks. We buy only the best, the latest, and, the most comprehensive industry wide metrics so you have the maximum amount of information to make a decision. No other tool gives you access to 90+ metrics.