for example 1 single s9 net you less than 0.01 per day with 1.4kw/h of consumption, and the diff keep increase, which mean this amount is decreasing over time
we are already approaching the day where you need the whole resitendial power(usually here 3kw/h) to run a miner...
seems you have very high kwH cost at your place
yeah but even with 5 cent you are still looking for a very long roi time, you need to factor a 10% diff increase if not more
going small and buying one s9 for example doesn't make sense to me, making few satoshi and wait 1 year to recover the initial investment if ever
it's better to buy bitcoin and wait for the value to skyrocket, much easier