Definitely not a scam, but the apparent success exposed weaknesses and difficulty of coping with demand. They are a well intentioned group of people working hard. However this is not enough. Will they be able to get the act together, deliver on promise and get company growing remains to be seen. I am giving benefit of the doubt and keep holding their shares. If they survive next 6 weeks I probably will be buying more.
So pretty much to make sure you making money you have to get the best miner first at the best price and order one every 3 months or whatever, then throw the old one away that you just spend a ton on and replace it with the new one. Rinse repeat. Essentially you will be buying 4 miners a year ?