How much are you willing to pay for a head of lettuce? I have no idea about the logistics or costs for building hydro-electric indoor multi-storied farms on mou

How much are you willing to pay for a head of lettuce? I have no idea about the logistics or costs for building hydro-electric indoor multi-storied farms on mountainsides, but it sounds like many millions of dollars. I think a more realistic approach to mountain farming would be what Sepp Holzer does in the Austrian Alps. https://www.youtube.com/watch?v=5GMXqgQIU9c https://www.youtube.com/watch?v=5GMXqgQIU9c