Does that actually make sense in your head? 0.24 $/kWh is my electricity cost, not AM's. What I compared was how much it would cost me to run an SP20, compared to the maintenance fees for AMHash. Despite your protestations to the contrary, that is an apple to apples comparison.
Like I said, if I was running an SP20 from home it would cost me $0.0039 per Gh/s per day. AMHash's maintenance fee is 42% lower than that and the up front cost per Gh/s is lower too. Sure, you may be able to underclock the SP20 to consume 747 W, giving a hash rate of 1353 Gh/s but then you've increased the cost per Gh/s to 125% for 81.5% of the power consumption. Even with such an underclock I'd still be paying $0.00318 per Gh/s per day, almost twice AMHash's maintenance fee.
If someone pays only 0.1 $/kWh, it will be cheaper than AMHash's maintenance fee. That's actually more than i pay. And the electric phase in my mining hut is being upgraded this week 😵