Everyone seems to be forgetting that they host the equipment for no extra costs. This saves a lot of $$$ on HVAC, power costs, and time spent. HVAC/power costs would cost a small fortune for a farm in the range of 5-10Th (especially if these are built on Avalon's power hungry chip design.)
Is 8% APY really that bad? I think it's quite nice considering they do all the work for you.
That is what I charge for hosting that includes all that as well. CoinHoarder is absolutely correct about that. I know what it takes to cool and power 5-10 Thash. What I am saying is that what they are offering is just a nice package of existing ASIC options. Nothing ground-breaking in the arena of their own chip.