Hello, my friend! Well the current cost to produce one BTC is around 4000-5000 usd, this is an average estimation and can vary... anyway next week it is very possible the BTC takes an uptrend for a few days and reaches the 7000 usd again. This is what always happens so if you can buy now little portions then you 'll get a good profit as soon as it goes up, but remember it never stays up for a long time, this is the rule of the BTC. Also i believe that the max price for 2018 will be around 10000 usd which is not the most probable. In my opinion it will stay between 8500 and 5500 until the end of the year no matter what the ETF does or any other good or bad event... Soon I 'll post an article about all these possibilities, facts and realities and I 'll let you know. Thanks for your upvote and for following me too! keep in contact and have a nice day!!!