With Hashnest you can recover your investments at any time - just sell your hashpower and get away with mining profit!
I see2, wait i think that it is a good idea however if we are going to wait the market price of the power also lowers down so i guess we still can't get the profit that we desire?
I don't know, but S9 price hit the record today, although the increasing difficulty shifted maintenance to 35-40% instead of 25-30% a month ago. 12.5 THs would cost 2 BTC on the market which is 12% higher than the price of the new devices sold by Hashnest (currently out of stock though), although 10 days ago when the devices were in stock, the market and stock prices were equal. But if the devices appear in stock unexpectedly, the price will fall 10% and people who buy the hashpower now on the market will lose 10% of their equity. And 10% is a month of mining, by the way.