Im not a pro or anything, but I have sold a few domains in the past.
Here are some helpful tips for finding/selling good domains.
1. sex-lovely-pussy69.com might look like a good domain and you might think you can sell it for $14,000 on ebay... but your better off saving your $7.99 ($35.00 if you are someone who doesnt shop around)
2. Dot coms are still king.
3. Use services such as marketleap.com to see if your domain has any link popularity.
4. archive.org is also a good tool to find out the history of the domain.
5. If it has been unregistered for 8 months. Its probobly not very valuable.
6. Build a website around your domains. They will be much more valuable if they have traffic.
7. Keep track of your domains and remember to renew them or I will snatch them up myself.
Like I said, Im not a pro, but here are some tips
