Plugging in the numbers, it's $12/day revenue, $9 profit at 9 cents power.
Assume they ship 3k units, which increase difficulty by 25% over a month, revenue down to $9/day, profit $6/day. Seems like a 100 day payback investment, but whatsminer DCR shipping in 60 days.
Nah this will get wrecked.
Maybe after December, only the whatsminer miner can make profit due to the high efficiency.