10-Year Plan

Ok, sea dragon would have put the cost down to about $500/kg. Weight of
a man in life support (i.e. someone in a space suit) = 200kg. Hence cost
is $100,000 per person. And (but) that's an expendable.

Actually you'd need to launch a bit more mass than that for recovery
back to the earth, but then again the $500/kg is perhaps on the high
side- they were quoting between $60 and $600/kg as the likely price for
Sea Launch.

But that's just an example, I'm actually looking at achieving more like
$500/kg with a reusable vehicle.

Al Globus wrote: