Actually, thinking of it like a lotto ticket, .. if this miner is actually using an S9, and is paying the average U.S. residential rate, resulting in a $5 spend per day in electricity, .... then that's a $5 ticket for a lottery that has a 1 in 100,000 chance of winning (per CK's tweet, I haven't myself calculated the odds of a 13 TH/s S9 is at current difficulty).

That's why the cost per kWh and the efficiency of your rig model are so crucial.