A good friend of mine already pre-purchased two of these, but I'm still a little sceptic about it. It is that kind of deal that sounds too good to be true. A factor you should weight in is that difficulty will raise very quickly, so it is a race. The first ones to have one of this rigs and start mining will profit the most, the latecomers profit is uncertain. But if you have that money free to spend on mining (not compromised in basic needs), I would go for it. And if you do so, please share with all your experience.