It's all a big trade-off most of the time. Sedo pays a terrible ppc, but they offer good name exposure for selling domains. Others, like trafficclub, that pay fairly high ppc, don't offer exposure for selling.
After reading recommendations for NameDrive from np members, I decided to try it with an assortment of around 200 domains. After a few days, I have about 400 "views" and only 4 clicks with a total $1.07 (highest click was 35 cents). The view rate was okay, but the click rate and click amounts are poor.
I'm probably going to move my domains back to a split between sedo and afternic. Overall, I've found Afternic pays much better than sedo or namedrive...and it's a fairly good place to sell names...plus, domains parked there show up in browser searches.