A slightly OT example: For those following along at home who don't get why HF batch 1 customers are so unhappy about their "october" batch 1 units,  compare: Instead of paying 55 BTC months ago for a 400GH HF batch 1 unit with uncertain delivery they could have sat comfortably on their coin and today ordered 3.1 TH/s of antminer for immediate delivery for the same price (or just got 360GH/s for 6.3 BTC).  Even figuring it in terms of USD, the little antminer devices are lower cost per GH/s than hashfast batch 1 devices which are still not shipping.