80k per year if you use aws

I'm no expert in this field from what i know, Smaller transistor is not always be better. When you shrink transistor smaller and smaller electrons will start jumping from nodes spontaneously due to quantum tunneling thus increasing the computational error. These 1nm will not have the same power efficient of actual 1nm chips but you can increase the performance by optimising layout architecture etc. It depends on the company making it, for example Intel 10nm outperforms some 7nm amd chips

2nm is not length of the transistor. They stopped using the actual dimensions when referring nm long time ago. Here 2nm means 1.5x faster than 3nm chips