A "fair" market price for hardware would be around 1.4$/GH at the moment (hardware delivered RIGHT NOW)
Everything higher than that will probably not ROI (if you don´t have 0.05$/kWh).
Are you guys receiving any compensation, or did you effectively buy 2TH at $6K?
You do know that spondoolies 0.4W/GH 0.7$/GH devices will be shipped come August?
Bitmain will ship even sooner, so I for one would get a refund from BA and run.