Here is a small simulation.
You pay 4000 $ for the hardware, that means about 8 BTC right now
If delivered in 2 months from now, it will give you back 2 BTC at best scenario with a 0.1$ kw/h price.
It's so sad when I see so many people getting scammed by these big companies

Same goes for both SP30 and SP31.
Your simulation is absolutely useless because the future difficulty prediction has no basis in reality.