Ether mining with Genesis is pointless in general. For the price of 20 MH/s which is $880. You could buy a half way decent PC, stick a 290x in it and get 27 MH/s and have full control over what your system is doing. FYI a 290x only costs, after a discount on Newegg, $290....... So yeah you could get almost Triple what Genesis gives you if you have a few random PC's sitting around that could handle a 290x tossed into it.
So Basically the pricing they have for Ethereum mining is a complete and total ripoff, especially if you consider within 10 months or so I believe I read somewhere Ethereum is switching over to PoS only.
You forget the pc is using power. In my case 22.5 cents Kwh
True enough, though I would say on average you would cover the cost plus some mining on your own. Me personally my Electricity runs at around .09 Cents to .11 Cents. Not exactly sure what the break even ratio is though as I have issues doing the math of that, but I would assume most would at minimum break even in general with the current price of Ethereum being around $4.82 per, and on average you will make around .8-1 Ethereum per Day give or take a little bit.
If you have 100 MH/s mining power, that will consume about 800W power, or 20 kWh. If your electricity price is $0.2, that is $4 a day or $1440 a year. You can sell your miner later if you do not want it.
Genesis mining charges you $4400 a year.