Ok... so what are you paying for electricity?
Mining is barely profitable for me here in the states paying $0.17 per kwh. If you are paying more than that for power IDK why you'd even attempt to mine. Unless you are paying more than $0.32 you are still breaking even. Factor in speculation that the $/BTC increases, the TerraMiner is still profitable for now.
Do you really need to know the whole story? Ok well listen. When I started out mining my electric rates were $0.19 per kw. After I added the Terraminers in March my electric usage went up considerably and every month my electric company threatened to raise my rates. Well they finally did it last month. They raised it to $0.34 kw. Happy now?