It's currently pointing to a holding page which receives approx 30/40+ type-ins per day. Once a site is up and running with some unique content i would expect traffic levels to pick up nicely.
Do you have any proof of you owning this domain or the traffic it receives? Just posting a link to this thread on the site and providing some Google Analytics screenshots should be sufficient I expect.
Do you have any ideas how much you are looking for? Posting an estimate price would likely help the sale, providing it is fair.