No current miner is profitable at the rate btc price is going. The money you can buy btc with will be at least double what you would be able to mine with that same dollar value. If you buy hardware for a profit you need to rethink your strategy quickly
Depends...I buy used gear for BTC that with my free power makes more than I bought it for all the time. If you buy new stuff even with free power you lose. If I did not have free power there is no way I could get a positive ROI though. I know everyone likes to bash on people buying miners, but lets not forget it is good for the network. If we see months of decline in hashrate that is horrible for Bitcoin as a whole.
Maybe not? Hoping the price dives under $100 for a while so the big guys have to close shop
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