On an average, Sedo is good! There are two things mainly, you parking revenue and sales if you got a buyer from Sedo market place.
I earn about 10 RPM at Godaddy for the names that I have parked there ($10 for 1000 impressions). I have their domain discount club (~$90 a year), which includes free domain parking and also includes a Godaddy Auctions membership. It ends up being cost effective for me, since I have a lot of domains in that account.
What is the point of them bieng in business if they giving away 100%??? Btw my ctr with bodis is 2-3%