I'd always sell it at digitalpoint. It's the fastes way with no fees. Some other charges up to 40% for selling it.
Sedo, namespro and digitalpoint is best option to sell your domain name in this website you will find always potential user those are looking to some nice domain name.
if you DO NOT want to pay high fees (NO commission fees) it's only $9/year per domain or $9/m for unlimited domains try http://quicksellers.com/unlimited-domain-listing/
I've seen people mention selling domains on ebay before, so I tried it & barely had any views. Ebay seems like it's full of spam regarding domain names. It doesn't look like many of them sell at all. Does anyone have an opinion on this?
Ebay is a Ebay is a small market place for domains. I have seen few good names going for mid $XXX but my experience says that 90% domains are just listed on ebay they never actually sell.
if you have $29 bucks, I would post on Flippa. (but you will have to pay additional 5% success fee) that is the only thing that sucks!
DNS is currently the best place if you got bulk domain..... else Sedo... And best of all is End Buyer....
I join a lot of Linkedin groups pertaining to the domain industry and related groups that have to do with marketing, angel investors etc.