You are quite wrong in that assumption, with a 1 BTC price they seem to sell nicely. When the exchange comes it's very likely they'll go over that price because of the mining difficulty and block reward is already very challenging. I'm just holding for now, I made a few sales earlier to extend the ownerbase but might not sell anymore before real exchange opens. Yes, I got in early and thus I had the change to sell cheaply on a few occasions.