[from occupied ga]

However, certain elements/compounds, like helium 3, only exist in necessary quantities "out there", can be brought down to surface at reasonable cost, and are extremely valuable

I missed seeing the He³ reservoirs on Mars. Here I just thought it was rocks, dust, ice and CO₂ And I also missed the mechanism where you can bring things from space to earth at a reasonable cost. All these years I was laboring under the misapprehension that the moon rocks were expensive because it cost so much to get them.

[Shryke]

My Lord you wake up early.

I missed seeing the He3 reservoirs on Mars.

Who said there was or wasn't?

And I also missed the mechanism where you can bring things from space to earth at a reasonable cost.

Gravity. Once we have a moon base, dropping payloads down to earth only requires heat shielding and parachutes. Cheap.

All these years I was laboring under the misapprehension that the moon rocks were expensive because it cost so much to get them.

That will remain true until we have a platform outside of the Earth's gravity well. Then costs plummet.