15K is not rich for US. It is 1/3 of a new car price ($46,290 in 2022). It might be not very doable for you, personally, but I bet that majority of households can afford this, especially since they will get free electricity after that, and if they truly worry about climate change. If not, then why do they require for oil companies to make financial sacrifices, but not for themselves (even if it is a sacrifice at all)?