All the major extensions taken, clean looking name, goes well with .org. I think that is very good find and I would say mid xxx if not more.
You have a great domain name there, and it might be worth your while to hang onto it and probably develop it. (Well, that is atleast what I would have done with it). Many people do not like the .org, but there is nothing wrong with it. In many instances it may even outrank .coms and .nets. Again, if you do own the domain stick to it. It may be worth in the mid to high XXX range in a traders market. It may may fetch mid to high XXXX in the end-buyers market. Great domain!