I applied for Sedopro this week. I was not only turned down but I was advised that Sedopro isn't suitable for IDN Traffic. I have some 4000 domains, so Sedos idea of giving you specialist treatment is to ring you up, waste a whole load of your time and then offer a special consession of a few screen shots.
The bottom line is that Sedo are not prepared to commit to IDN in any shape or form until the traffic materialises. I asked them if they wanted to get on the boat or wave from the quayside. They clearly felt that the quayside was for them.
As an IDNer, you would be well advised not waste your time with these arseholes.
Namedrive by contrast are helpful communicative and are doing everything that is reasonable to try to make their service more interesting and rewarding to the IDNer. That is a company that is going far.