These things are WAY over priced. $1100 $795. 3 S3s will give you similar hash rate and just slightly less efficient W/Ghs wise at just above half the price. Its a no brainer. And of course there is also the C1 which isn't as efficient but the price is right.
^FTFY. if you think $795 for 1.7TH/s is 'WAY overpriced' you should really find another hobby

the equation is this;
Your belief in Bitcoin vs price of hardware vs your electricity costs.
nowhere in this equation is the efficacy of the miner, as you fail to mention the efficacy of the miner in your own statement.
you're welcome.

Its overpriced, 1 TH/s market price is less then 1 BTC right now...