FineE, you are right!
50,000 results in google, but only around 1000 searches a month. This phrase therefore has a low keyword effectiveness index value, and may be difficult to develop, with little likelihood of good search engine placement, unless you are great at SEO.
On the other hand, it could be sold to someone that has an already developed site. You will have to say the .org element is for a reason. I can't see the name itself fetching more than around $1000 tops though, probably more like $200. It will be tricky to sell.