Thanks for the fast response.
Here's what I am wondering about:
You have a Greek bank account for deposits - there are capital controls at the moment, so money transferred there cannot easily be wired out of the country. This leaves the question why the price for Bitcoins isn't much higher on btcgreece, because people could buy Bitcoin with the balances on their Greek bank accounts which are otherwise frozen. This would then further enable them to buy i.e. gold or other assets if they don't trust Bitcoin.
Their is a risk of the balances on Greek bank accounts to be subject to a haircut and I don't see that priced in. Also who is willing to sell his Bitcoin in times like that against a higher frozen balance on his bank account