The electricity bit is quite important, in fact. I've been speculating $0.06/kWh, because he's in Guangdong province... but that could be incorrect if he is elsewhere, or has a bulk rate, or if the rates I found posted were inaccurate.

It will be a large determining factor in whether AM will stay competitive as new farms open up in places with very cheap electricity (~$0.01/kWh).

As for hardware, I believe I've seen $10k/TH, though that is yet again not an official figure. I doubt the expense for employees beyond manufacturing is significant compared to mining revenue.