I had two domains, a .com and .net with godaddy. I’m beyond their redemption period ($80 fee), but they said it should be released back to the public domain soon and I may be able to get it back. Before I knew this, I paid $12.99 plus ican fees for the .com thinking it was available as the rep told me she was able to add it their cart, and I paid a $24.95 fee for back ordering my .net domain. Shortly thereafter, I received an email from godaddy saying:
Here's a test I have in process.  I bought an old $5 closeout domain from Godaddy TDname expired auction.  I put a quick minisite up and linked to it with a crazy anchor text phrase.  The domain is ranking for that crazy term now.  It's gone through one pagerank update and I'm waiting for a second to come.  Then I'll redirect the domain to another minisite.  I suspect the second site won't rank for the anhor text, but we'll see.  
They are easy to type and remember: You can’t get a easy to remember new domain name without paying huge bucks these days. Gone are the days where you can simply grab almost any incredible domain name just by paying a couple of bucks. This is one of the major reasons most people look for expired domains because most expired domains are short and sweet.
Simple question: say I get the URL I want via auction for however umpteen hundreds of dollars, what about the renewal prices? Am I at the mercy of the auction house every year I want to renew it? Is it as simple as paying 10 or 15 bucks a year like with GoDaddy with a URL I got not through an Auction? I’m willing to pay for the desired URL up front but I don’t know what that entails down the pike.
It is very possible that the owner has a recurring payment in place, or that the owner renews after it expires. Because GoDaddy gives a redemption period like all registrar, many domain name investors will actually allow their domains to go through auction to see what the “market value” is of a domain name and THEN renew it. It sucks if you’re the buyer thinking you won the auction. It happens often, unfortunately.

Thousands of domain names expire every day. The reasons are different. Some owners forgot to renew the domains, some just don't want them anymore or they moved on to other projects. For most people these so called Expired Domains don't have any value. They just see a bunch of Domain Names someone else deleted and move on, but for the people who know about SEO or the value of good Backlinks, Expired Domain Names are money just waiting to get picked up from the street. The only problem is to separate the good ones from the bad ones. That is where ExpiredDomains.net comes into play.