Question about domain selling sites

I am looking for reviews of sites like DNforum. I have some catchy/short/typein domains I was thinking about unloading and I was going to list them at DNforum until I found out it's going to cost me $50 just for the privelege of posting there. That isn't a lot of money but it is a lot to pony up without any previous experience with their site. Also, domain sales is not my main line of work, I just happen to have one or two I am thinking of selling.

Is DNForum worth $50? Are there other sites out there that <B>are</B> worth whatever they charge? I've never really bothered with third-party services when selling domains, before, so I want to arm myself with as much information as possible. Suggestions are welcome.

Thanks,
SpaceAce