It depends on what keywords you use and what your CTR (click through rate) is. If you are using Sedo, they give a bonus for quality traffic (U.S, UK,). Poor quality traffic or bad keyword combo's will produce .08 RPC (revenue per click). Good quality traffic with good keyword combo's can produce .70-$5 a click. good luck.
are u talking about the site in ur signature ? Video Site = not many high paying keywords So I think you can earn $0.50 - $1/day from Sedy by parking that domain (I think so)
250 uniques for generic content is usually below $1 per day and sometimes even below $0.50 per day A blog about everything doesn't gather targetted visitors
Impossible to tell. But I would love to hear how you go once you have done it. I have Sedo Pro and my results vary widely.
I have got a domain parked at sedo which gets around 200 visitors per day. It makes only few cents. So do not be disappointed if the result is not good.